Diagnosing and overlapping

Alopecia areata is an autoimmune condition that causes patchy hair loss, usually on the scalp but sometimes on the eyebrows, beard area, or other parts of the body. It can appear suddenly, which can feel upsetting or worrying, but it is not contagious, and many people find their hair grows back over time.

Alopecia areata happens when the immune system mistakenly targets the hair follicles, causing the hair to fall out. The follicles remain alive, which means hair can regrow sometimes on its own, sometimes with treatment.

Common signs include:

• Round or oval patches of hair loss
• Smooth skin where the hair has fallen out
• Short “exclamation mark” hairs at the edges of patches
• Loss of eyebrows, eyelashes, or beard hair in some people
• Nail changes, such as ridging or pitting, occasionally

Alopecia areata can affect one small area or several, and symptoms may come and go.

Why it is relevant to psoriatic disease

Alopecia areata is important to recognise because:

• It can co‑exist with psoriasis, as both involve the immune system.
• Nail changes in alopecia areata can resemble nail psoriasis.
• Sudden hair loss may be mistaken for scalp psoriasis worsening or treatment side effects.
• People with psoriatic disease may worry that hair loss is part of a flare or a sign of increased inflammation.
• Treatments differ, what helps psoriasis does not treat alopecia areata.

Understanding alopecia areata helps people with psoriatic disease feel more confident about what’s happening with their hair and when to seek advice.

What can I do about it?

Alopecia areata is manageable, and many people find their hair regrows with time or treatment. A healthcare professional can help confirm the diagnosis and discuss suitable options.

General approaches often include:

• Topical steroids to calm inflammation around the follicles
• Gentle hair and scalp care
• Avoiding harsh hair treatments such as strong dyes or tight hairstyles
• Supportive cosmetic options, such as wigs, hair

Where can I get help?

If you’re unsure whether your hair loss is alopecia areata, psoriasis‑related, or something else or if patches are spreading or affecting your wellbeing support is available.

You can:

• Speak to your GP or dermatology team
• Ask for a review of your psoriasis or psoriatic arthritis care plan if you’re concerned about a flare
• Request a referral if symptoms are persistent, spreading, or unclear.

Ankylosing spondylitis (AS) is a long‑term inflammatory condition that mainly affects the spine and sacroiliac joints (the joints at the base of the spine). It can cause persistent back or buttock pain, especially after rest, and may lead to stiffness that improves with movement. AS is not contagious, and many people find their symptoms improve with the right care and support.

AS happens when the immune system causes inflammation in the spine and nearby joints. Over time, this can make the back feel stiff, sore, or difficult to move, particularly first thing in the morning or after sitting still.

Common signs include:

• Lower‑back or buttock pain, often deep and hard to pinpoint
• Morning stiffness
• Pain that worsens with rest and improves with gentle movement
• Difficulty bending or twisting
• Pain that may spread into the hips or thighs

Symptoms may come and go, and can vary depending on activity levels and inflammation.

Why it is relevant to psoriatic disease

Ankylosing spondylitis matters in psoriatic disease because:

• It shares immune pathways with psoriatic arthritis.
• Both conditions belong to the spondyloarthritis family, meaning they can overlap.
• Back pain from AS may be mistaken for mechanical back pain, sciatica, or strain.
• People with psoriasis may worry that new back symptoms mean their condition is worsening.
• AS can occur alongside enthesitis and sacroiliitis, which are also seen in psoriatic arthritis.
• Understanding AS helps people feel more confident about what’s happening in their spine and when to seek advice.

What can I do about it?

Ankylosing spondylitis is manageable, and many people find their symptoms improve with supportive strategies. A healthcare professional can help confirm the diagnosis and discuss suitable options.

General approaches often include:

• Gentle movement, especially after rest
• Pacing activities to avoid long periods of sitting or standing
• Warm or cool compresses to soothe discomfort
• Supportive posture, such as avoiding slumping or twisting
• Gentle stretching, if advised by a clinician

Where can I get help?

If you’re unsure whether your symptoms are ankylosing spondylitis, psoriatic‑related, or something else or if back pain is affecting daily life support is available.

You can:

• Speak to your GP
• Ask for a referral to rheumatology if symptoms are persistent
• Request a review of your psoriasis or psoriatic arthritis care plan if you’re concerned about overlapping symptoms.

Atopic dermatitis often called eczema is a long‑term inflammatory skin condition that causes dryness, redness, itching, and irritation. Symptoms can come and go in flares, and although it can feel uncomfortable or frustrating, it is not contagious, and many people find their skin improves with the right care.

Atopic dermatitis happens when the skin barrier doesn’t work as well as it should, making the skin more sensitive to dryness, irritants, and everyday triggers. The immune system also plays a role, causing inflammation that leads to itching and redness.

Common signs include:

• Dry, cracked skin
• Intense itching often the main symptom
• Red, inflamed patches
• Less sharply defined edges than psoriasis
• Rashes on the hands, face, elbows, or behind the knees
• Skin thickening from repeated scratching

Atopic dermatitis can affect one area or several, and symptoms may come and go.

Why it is relevant to psoriatic disease

Atopic dermatitis is important to recognise because:

• It can co‑exist with psoriasis, as both involve inflammation.
• Eczema patches can be mistaken for psoriasis, especially when red and flaky.
• Scalp eczema may resemble sebopsoriasis or scalp psoriasis, making diagnosis harder.
• People with psoriatic disease may worry that new itching or redness is a psoriasis flare.
• Treatments differ what helps psoriasis may not help eczema, and vice versa.

Understanding atopic dermatitis helps people with psoriatic disease feel more confident about what’s happening on their skin.

What can I do about it?

Atopic dermatitis is manageable, and many people find their symptoms improve with the right approach. A healthcare professional can help confirm the diagnosis and discuss suitable options.

General approaches often include:

• Moisturisers to repair the skin barrier
• Gentle skincare, avoiding harsh soaps or fragranced products
• Short courses of topical steroids to calm inflammation
• Calcineurin inhibitors for sensitive areas
• Avoiding known triggers, if identified

Where can I get help?

If you’re unsure whether your symptoms are atopic dermatitis, psoriasis, or something else or if your skin is becoming more itchy, sore, or difficult to manage support is available.

You can:

• Speak to your GP or dermatology team
• Ask for a review of your psoriasis or psoriatic arthritis care plan if you’re concerned about overlapping symptoms.

Bursitis is a painful inflammatory condition affecting the bursa, small, fluid‑filled sacs that cushion joints and help them move smoothly. When a bursa becomes irritated or inflamed, the area can feel sore, swollen, or stiff. Bursitis is not contagious, and many people find their symptoms improve with the right care.

Bursitis happens when a bursa becomes inflamed, often due to pressure, friction, or irritation around a joint. It can affect many areas, including the shoulders, elbows, hips, knees, and heels.

Common signs include:

• Pain around a joint, especially with movement
• Swelling or puffiness over the affected area
• Warmth or tenderness
• Stiffness, particularly after rest
• Pain when lying on, leaning on, or pressing the area

Bursitis may come and go, and symptoms can vary depending on the joint involved.

Why it is relevant to psoriatic disease

Bursitis matters in psoriatic disease because:

• It can occur alongside psoriatic arthritis, as both involve inflammation around joints.
• Pain from bursitis may be mistaken for a psoriatic arthritis flare, especially when swelling is present.
• Bursitis can overlap with enthesitis, another common feature of psoriatic arthritis.
• People with psoriasis may worry that new joint pain means their condition is worsening.
• Treatments differ, what helps psoriasis may not help bursitis, and vice versa.

Understanding bursitis helps people feel more confident about what’s happening in their joints and when to seek advice.

What can I do about it?

Bursitis is manageable, and many people find their symptoms improve with simple, supportive strategies. A healthcare professional can help confirm the diagnosis and discuss suitable options.

General approaches often include:

• Gentle movement, avoiding positions that worsen pain
• Resting the affected area during painful periods
• Warm or cool compresses to soothe discomfort
• Supportive footwear if the heel or hip is affected
• Pacing activities to reduce strain on the joint
• Gentle stretching, if advised by a clinician

Where can I get help?

If you’re unsure whether your symptoms are bursitis, psoriatic‑related, or something else or if pain or swelling is affecting daily life support is available.

You can:

• Speak to your GP
• Ask for a referral to rheumatology if symptoms are persistent
• Request a review of your psoriasis or psoriatic arthritis care plan if you’re concerned about overlapping symptoms.

Crohn’s disease is a long‑term inflammatory condition that affects the digestive system. It can cause abdominal pain, diarrhoea, weight changes, and fatigue, and symptoms often come and go in flares. Crohn’s disease is not contagious, and many people find their symptoms improve with the right medical care and support.

It happens when the immune system becomes overactive and causes inflammation anywhere along the digestive tract from the mouth to the anus, though it most commonly affects the small intestine and colon.

Common signs include:

• Abdominal pain
• Diarrhoea, sometimes with urgency
• Fatigue
• Unintended weight loss
• Loss of appetite
• Mouth ulcers
• Joint aches in some people

Symptoms can vary widely. Some people have mild disease, while others experience more significant flares.

Why it is relevant to psoriatic disease

Crohn’s disease is important to recognise because:

• It is more common in people with psoriasis or psoriatic arthritis than in the general population.
• Psoriasis and Crohn’s disease share similar immune pathways, so they can occur together.
• Some symptoms such as joint pain or fatigue may overlap with psoriatic arthritis, making diagnosis more complex.
• People with psoriatic disease may worry that digestive symptoms are related to their skin or joint condition.
• Treatments differ what helps psoriasis may not help Crohn’s disease, and vice versa.

Understanding Crohn’s disease helps people with psoriatic disease recognise when digestive symptoms may need separate medical attention.

What can I do about it?

Crohn’s disease is manageable, and many people find their symptoms improve with the right medical care. A healthcare professional can help confirm the diagnosis and discuss suitable options.

General approaches often include:

• Working with a clinician to manage inflammation
• Gentle dietary adjustments if recommended
• Looking after general wellbeing, including rest and stress management
• Avoiding triggers that worsen symptoms, if known

Because Crohn’s disease is a medical condition affecting the digestive system, it’s important to seek professional guidance rather than trying to manage symptoms alone.

Where can I get help?

If you’re unsure whether your digestive symptoms are related to Crohn’s disease, psoriatic disease, or something else or if symptoms are persistent, painful, or affecting daily life support is available.

You can:

• Speak to your GP
• Ask for a referral to a gastroenterology team
• Request a review of your psoriasis or psoriatic arthritis care plan if you’re concerned about overlapping symptoms
• Seek urgent medical advice if symptoms suddenly worsen.

Dactylitis is a type of joint and tendon inflammation that causes an entire finger or toe to become swollen, painful, and stiff. The digit may look puffy or sausage‑shaped, and symptoms can come and go. Dactylitis is not contagious, and many people find their symptoms improve with the right care and support.

Dactylitis happens when inflammation affects multiple structures in a single digit including the joints, tendons, and surrounding tissues. This leads to swelling that involves the whole finger or toe, not just one joint.

Common signs include:

• A swollen, puffy finger or toe
• Pain or tenderness when moving or pressing the area
• Stiffness, especially in the morning
• Difficulty gripping objects or walking, depending on the digit
• A digit that looks uniformly enlarged, rather than swollen in one spot

Symptoms may appear suddenly or develop gradually.

Why it is relevant to psoriatic disease

Dactylitis is important to recognise because:

• It is strongly associated with psoriatic arthritis, and is considered one of its hallmark features.
• People with psoriasis may worry that sudden swelling means an injury or infection.
• Dactylitis can be mistaken for gout, injury, or cellulitis, especially when the digit is red or warm.
• It often occurs alongside enthesitis, another common feature of psoriatic arthritis.
• Understanding dactylitis helps people feel more confident about what’s happening in their joints and when to seek advice.

What can I do about it?

Dactylitis is manageable, and many people find their symptoms improve with supportive strategies. A healthcare professional can help confirm the diagnosis and discuss suitable options.

General approaches often include:

• Gentle movement, avoiding activities that worsen pain
• Resting the affected digit during painful periods
• Warm or cool compresses to soothe discomfort
• Pacing activities to reduce strain on the hands or feet
• Supportive footwear if toes are affected

Where can I get help?

If you’re unsure whether your symptoms are dactylitis, psoriatic‑related, or something else or if swelling or pain is affecting daily life support is available.

You can:

• Speak to your GP
• Ask for a referral to rheumatology if symptoms are persistent
• Request a review of your psoriasis or psoriatic arthritis care plan if you’re concerned about overlapping symptoms.

Dermatomyositis is a rare inflammatory condition that affects both the skin and the muscles. It can cause distinctive rashes, muscle weakness, and sometimes fatigue or joint discomfort. Although symptoms can feel worrying, dermatomyositis is not contagious, and many people improve with the right medical care and support.

Dermatomyositis happens when the immune system becomes overactive, causing inflammation in the skin and the muscles. The exact cause isn’t fully understood, but it is thought to involve a mix of immune activity, genetics, and sometimes triggers such as infections.

Common signs include:

• Purple or red eyelid rash (heliotrope rash)
• Raised, scaly bumps over the knuckles (Gottron’s papules)
• Muscle weakness, especially in the shoulders and hips
• Fatigue
• Rash on the chest, back, or arms
• Sensitivity to sunlight

Symptoms can vary widely. Some people mainly notice skin changes, while others experience more muscle involvement.

Why it is relevant to psoriatic disease

Dermatomyositis is important to recognise because:

• Some rashes can look similar to psoriasis, especially when red or scaly.
• People with psoriatic disease may worry that new skin changes are a psoriasis flare.
• Fatigue and muscle weakness may overlap with symptoms of psoriatic arthritis, making diagnosis more complex.
• Treatments differ what helps psoriasis does not treat dermatomyositis.
• Both conditions involve the immune system, so they can occasionally co‑exist.

Understanding dermatomyositis helps people with psoriatic disease feel more confident about what’s happening on their skin and muscles.

What can I do about it?

Dermatomyositis is manageable, and many people find their symptoms improve with the right medical care. Because it affects both skin and muscle, it’s important to seek professional guidance.

General approaches often include:

• Gentle skincare to reduce irritation
• Sun protection, as rashes can worsen with UV exposure
• Supportive wellbeing strategies, including rest and pacing
• Working with a clinician to manage inflammation

Where can I get help?

If you’re unsure whether your symptoms are dermatomyositis, psoriasis‑related, or something else or if skin or muscle symptoms are worsening or affecting daily life support is available.

You can:

• Speak to your GP
• Ask for a referral to dermatology or rheumatology
• Request a review of your psoriasis or psoriatic arthritis care plan if you’re concerned about overlapping symptoms
• Seek urgent medical advice if symptoms suddenly worsen.

Enthesitis is inflammation where tendons or ligaments attach to bone. These attachment points are called entheses. When they become irritated or inflamed, the area can feel painful, tender, or stiff, especially during movement. Enthesitis is not contagious, and many people find their symptoms improve with the right care and support.

Enthesitis happens when the immune system causes inflammation at the enthesis the anchor point where soft tissues connect to bone. It can affect many areas, including the heels, knees, hips, elbows, and fingers.

Common signs include:

• Tender spots around a joint
• Pain when moving or pressing the area
• Morning stiffness
• Heel pain, especially at the Achilles tendon or under the foot
• Pain that worsens after rest

Symptoms may come and go, and can vary depending on which enthesis is affected.

Why it is relevant to psoriatic disease

Enthesitis is important to recognise because:

• It is a key feature of psoriatic arthritis, and one of the signs doctors look for.
• Heel pain or tendon discomfort may be mistaken for injury or overuse.
• People with psoriasis may worry that new joint‑area pain means their condition is worsening.
• Enthesitis can occur alongside dactylitis, another common feature of psoriatic arthritis.
• Understanding enthesitis helps people feel more confident about what’s happening in their joints and when to seek advice.

What can I do about it?

Enthesitis is manageable, and many people find their symptoms improve with supportive strategies. A healthcare professional can help confirm the diagnosis and discuss suitable options.

General approaches often include:

• Gentle movement, avoiding activities that worsen pain
• Supportive footwear, especially for heel or foot pain
• Warm or cool compresses to soothe discomfort
• Pacing activities to reduce strain on affected areas
• Gentle stretching, if advised by a clinician

Where can I get help?

If you’re unsure whether your symptoms are enthesitis, psoriatic‑related, or something else or if pain or stiffness is affecting daily life support is available.

You can:

• Speak to your GP
• Ask for a referral to rheumatology if symptoms are persistent
• Request a review of your psoriasis or psoriatic arthritis care plan if you’re concerned about overlapping symptoms.

Hidradenitis suppurativa (HS) is a long‑term inflammatory skin condition that causes painful lumps, spots, and tunnels under the skin, usually in areas where skin rubs together. It can feel distressing or uncomfortable, but HS is not contagious, and many people find their symptoms improve with the right care and support.

HS happens when inflammation affects the hair follicles deep in the skin. This leads to tender lumps, boils, and sometimes leaking spots or small tunnels under the skin. The exact cause isn’t fully understood, but it is thought to involve immune activity, genetics, and friction or pressure on the skin.

Common signs include:

• Painful lumps or boils under the skin
• Blackheads in pairs or clusters
• Leaking spots that may release fluid
• Small tunnels (sinus tracts) under the skin
• Tender areas in the armpits, groin, buttocks, or under the breasts
• Scarring in long‑standing areas

HS can affect one area or several, and symptoms may come and go.

Why it is relevant to psoriatic disease

Hidradenitis suppurativa is important to recognise because:

• It can co‑exist with psoriasis, as both involve the immune system.
• Painful lumps may be mistaken for infected psoriasis plaques or folliculitis.
• People with psoriatic disease may worry that new painful bumps are part of a psoriasis flare.
• Treatments differ what helps psoriasis does not treat HS.
• Both conditions can affect confidence, comfort, and daily life, so recognising the difference can help people feel more supported.

Understanding HS helps people with psoriatic disease feel more confident about what’s happening on their skin.

What can I do about it?

HS is manageable, and many people find their symptoms improve with the right approach. A healthcare professional can help confirm the diagnosis and discuss suitable options.

General approaches often include:

• Gentle skincare to reduce irritation
• Avoiding friction, such as tight clothing
• Warm compresses to soothe painful areas
• Keeping the skin clean and dry
• Supportive wellbeing strategies, including pacing and stress management

Where can I get help?

If you’re unsure whether your symptoms are HS, psoriasis‑related, or something else or if painful lumps are spreading or affecting daily life support is available.

You can:

• Speak to your GP or dermatology team
• Ask for a review of your psoriasis or psoriatic arthritis care plan if you’re concerned about overlapping symptoms
• Request a referral if symptoms are persistent, painful, or unclear.

Ichthyosis is a group of long‑term skin conditions that cause dryness, scaling, and thickened skin. The skin may feel rough or appear flaky, and symptoms can vary from mild to more noticeable. Ichthyosis is not contagious, and many people find their skin improves with the right care and support.

Ichthyosis happens when the skin’s natural process of shedding and renewing cells becomes slower or disrupted, leading to a build‑up of dry, scaly skin. Some types are present from birth, while others develop later in life.

Common signs include:

• Dry, rough, or scaly skin
• Flakes that may look like fish scales
• Tightness or discomfort, especially in cold weather
• Cracks or splits in very dry areas
• Thickened skin on the palms or soles in some types

Symptoms can affect small areas or much larger sections of the body, and may change with the seasons.

Why it is relevant to psoriatic disease

Ichthyosis is important to recognise because:

• It can look similar to psoriasis, especially when the skin is dry and flaky.
• People with psoriatic disease may worry that new scaling is a psoriasis flare.
• Thickened skin on the palms or soles may resemble palmoplantar psoriasis.
• Treatments differ  what helps psoriasis may not help ichthyosis, and vice versa.
• Both conditions can affect comfort and confidence, so recognising the difference can help people feel more supported.

Understanding ichthyosis helps people with psoriatic disease feel more confident about what’s happening on their skin.

What can I do about it?

Ichthyosis is manageable, and many people find their symptoms improve with the right approach. A healthcare professional can help confirm the diagnosis and discuss suitable options.

General approaches often include:

• Moisturisers to soften and hydrate the skin
• Gentle exfoliation, if advised, to remove loose flakes
• Avoiding harsh soaps or fragranced products
• Protecting the skin in cold weather, when dryness may worsen
• Supportive wellbeing strategies to help with comfort and confidence

Where can I get help?

If you’re unsure whether your symptoms are ichthyosis, psoriasis‑related, or something else or if dryness or scaling is becoming difficult to manage support is available.

You can:

• Speak to your GP or dermatology team
• Ask for a review of your psoriasis or psoriatic arthritis care plan if you’re concerned about overlapping symptoms
• Request a referral if symptoms are persistent or unclear.

Keratosis pilaris (KP) is a very common and harmless skin condition that causes small, rough bumps on the skin. These bumps often appear on the upper arms, thighs, or cheeks and can feel like “chicken skin.” KP is not contagious, and many people find their skin improves with gentle care.

Keratosis pilaris happens when keratin, a natural protein in the skin, builds up and blocks the tiny hair follicles. This leads to small, rough bumps that may look red or feel dry.

Common signs include:

• Small, rough bumps on the skin
• Dryness, especially in colder months
• Redness around the bumps
• A sandpaper‑like texture
• Bumps on the upper arms, thighs, buttocks, or cheeks

KP can affect one area or several, and symptoms may come and go.

Why it is relevant to psoriatic disease

Keratosis pilaris is important to recognise because:

• It can look similar to psoriasis, especially when bumps are red or flaky.
• People with psoriatic disease may worry that new rough patches are a psoriasis flare.
• KP on the arms or legs may resemble guttate psoriasis at first glance.
• Treatments differ what helps psoriasis may not help KP, and vice versa.
• Both conditions can affect confidence, so recognising the difference can help people feel more supported.

Understanding KP helps people with psoriatic disease feel more confident about what’s happening on their skin.

What can I do about it?

Keratosis pilaris is manageable, and many people find their symptoms improve with gentle, consistent care. A healthcare professional can help confirm the diagnosis and discuss suitable options.

General approaches often include:

• Moisturisers to soften the skin
• Gentle exfoliation, if advised, to remove loose keratin
• Avoiding harsh soaps or fragranced products
• Protecting the skin in cold weather, when dryness may worsen
• Supportive wellbeing strategies to help with comfort and confidence

Where can I get help?

If you’re unsure whether your symptoms are keratosis pilaris, psoriasis‑related, or something else or if dryness or roughness is becoming difficult to manage support is available.

You can:

• Speak to your GP or dermatology team
• Ask for a review of your psoriasis or psoriatic arthritis care plan if you’re concerned about overlapping symptoms
• Request a referral if symptoms are persistent or unclear.

Lichen simplex chronicus (LSC) is a long‑term skin condition caused by repeated scratching or rubbing. Over time, the skin becomes thickened, dry, and itchy, often forming a rough patch that can be difficult to ignore. LSC is not contagious, and many people find their symptoms improve with the right care and support.

LSC develops when ongoing scratching or rubbing triggers the skin to thicken as a protective response. This creates a cycle: itch → scratch → thicker skin → more itch.

Common signs include:

• Thickened, leathery skin
• Intense itching, often worse at night
• Dry, rough patches
• Skin that looks darker or lighter than surrounding areas
• Well‑defined plaques, often on the neck, ankles, wrists, or groin

LSC can affect one area or several, and symptoms may come and go depending on triggers.

Why it is relevant to psoriatic disease

Lichen simplex chronicus is important to recognise because:

• Thickened, itchy patches can look similar to psoriasis, especially when dry or scaly.
• People with psoriatic disease may worry that new rough areas are a psoriasis flare.
• Scratching due to psoriasis itching can lead to LSC, creating overlapping symptoms.
• Treatments differ what helps psoriasis may not help LSC, and vice versa.
• Both conditions can affect comfort and confidence, so recognising the difference can help people feel more supported.

Understanding LSC helps people with psoriatic disease feel more confident about what’s happening on their skin.

What can I do about it?

Lichen simplex chronicus is manageable, and many people find their symptoms improve with the right approach. A healthcare professional can help confirm the diagnosis and discuss suitable options.

General approaches often include:

• Moisturisers to soften and protect the skin
• Short courses of topical steroids to calm inflammation and reduce itching
• Avoiding scratching, using strategies like cool compresses or distraction
• Gentle skincare, avoiding harsh soaps or fragranced products
• Identifying triggers, such as stress, friction, or tight clothing

Where can I get help?

If you’re unsure whether your symptoms are lichen simplex chronicus, psoriasis‑related, or something else or if itching or thickened skin is becoming difficult to manage support is available.

You can:

• Speak to your GP or dermatology team
• Ask for a review of your psoriasis or psoriatic arthritis care plan if you’re concerned about overlapping symptoms.

Lupus is a long‑term autoimmune condition that can affect the skin, joints, and internal organs. It often causes fatigue, joint pain, and skin rashes, and symptoms can come and go in flares. Lupus is not contagious, and many people find their symptoms improve with the right medical care and support.

Lupus happens when the immune system becomes overactive and mistakenly attacks the body’s own tissues. This can lead to inflammation in the skin, joints, and sometimes organs such as the kidneys or lungs.

Common signs include:

• Red or purple rashes, often on sun‑exposed areas
• A butterfly‑shaped rash across the cheeks and nose
• Joint pain or stiffness
• Fatigue
• Sensitivity to sunlight
• Mouth ulcers
• Hair thinning in some people

Symptoms vary widely. Some people mainly notice skin changes, while others experience joint or systemic symptoms.

Why it is relevant to psoriatic disease

Lupus is important to recognise because:

• Some lupus rashes can look similar to psoriasis, especially when red or scaly.
• Joint pain from lupus may resemble psoriatic arthritis, making diagnosis more complex.
• People with psoriatic disease may worry that new skin or joint symptoms are a psoriasis flare.
• Treatments differ what helps psoriasis does not treat lupus.
• Both conditions involve the immune system, so they can occasionally co‑exist.

Understanding lupus helps people with psoriatic disease feel more confident about what’s happening in their skin and joints.

What can I do about it?

Lupus is manageable, and many people find their symptoms improve with the right medical care. Because lupus can affect multiple parts of the body, it’s important to seek professional guidance.

General approaches often include:

• Gentle skincare to protect sensitive areas
• Sun protection, as rashes often worsen with UV exposure
• Supportive wellbeing strategies, including pacing and rest
• Working with a clinician to manage inflammation and monitor symptoms

Where can I get help?

If you’re unsure whether your symptoms are lupus, psoriasis‑related, or something else or if skin or joint symptoms are worsening or affecting daily life support is available.

You can:

• Speak to your GP
• Ask for a referral to dermatology or rheumatology
• Request a review of your psoriasis or psoriatic arthritis care plan if you’re concerned about overlapping symptoms
• Seek urgent medical advice if symptoms suddenly worsen.

Osteoarthritis is a common joint condition where the smooth, protective cartilage inside a joint gradually becomes thinner and less cushioned. This can lead to pain, stiffness, and swelling, especially after activity or long periods of rest. Osteoarthritis is not contagious, and many people find their symptoms manageable with supportive care and pacing.

Osteoarthritis happens when the cartilage that cushions a joint begins to wear down. Without this smooth surface, the joint may feel stiff, sore, or difficult to move. It often affects the hands, knees, hips, and spine, but can occur in any joint.

Common signs include:

• Joint pain, especially after activity
• Stiffness, particularly after resting
• Swelling around the joint
• Reduced movement or a feeling of “grinding”
• Pain that may ease with gentle movement

Symptoms can vary from day to day and may flare with activity, cold weather, or overuse.

Why osteoarthritis matters in psoriatic disease

Osteoarthritis is important to recognise because:

• It can be mistaken for psoriatic arthritis, especially in the hands or spine.
• Both conditions cause pain and stiffness, but for different reasons.
• People with psoriasis may worry that new joint symptoms mean their condition is worsening.
• Osteoarthritis can occur alongside psoriatic arthritis, making diagnosis more complex.
• Understanding osteoarthritis helps people feel more confident about what’s happening in their joints and when to seek advice.

What can I do about it?

Osteoarthritis is manageable, and many people find their symptoms improve with supportive strategies. A healthcare professional can help confirm the diagnosis and discuss suitable options.

General approaches often include:

• Gentle movement, such as walking or stretching
• Pacing activities to avoid over‑exertion
• Supportive footwear, especially for knee or hip symptoms
• Warmth, such as heat packs or warm baths
• Resting the joint during painful periods

Where can I get help?

If you’re unsure whether your symptoms are osteoarthritis, psoriatic‑related, or something else  or if pain or stiffness is affecting daily life  support is available.

You can:

• Speak to your GP
• Ask for a referral to rheumatology if symptoms are persistent or unclear
• Request a review of your psoriasis or psoriatic arthritis care plan if you’re concerned about overlapping symptoms.

Plantar fasciitis is a common cause of heel pain, often felt when taking the first steps in the morning or after resting. It happens when the plantar fascia a thick band of tissue under the foot becomes irritated or inflamed. Plantar fasciitis is not contagious, and many people find their symptoms improve with the right care and support.

The plantar fascia supports the arch of the foot and helps absorb shock when walking. When this tissue becomes strained or inflamed, it can cause sharp or aching heel pain, especially during the first few steps after getting up.

Common signs include:

• Heel pain, often worse on first steps in the morning
• Tenderness under the heel or arch
• Stiffness after rest
• Pain that may ease with gentle movement
• Discomfort after long periods of standing or walking

Symptoms may come and go, and can vary depending on activity levels and footwear.

Why it is relevant to psoriatic disease

Plantar fasciitis matters in psoriatic disease because:

• It can be a form of enthesitis, a key feature of psoriatic arthritis.
• Heel pain may be mistaken for injury, overuse, or poor footwear.
• People with psoriasis may worry that new foot pain means their condition is worsening.
• Plantar fasciitis can occur alongside dactylitis or other joint‑area inflammation.
• Understanding plantar fasciitis helps people feel more confident about what’s happening in their feet and when to seek advice.

What can I do about it?

Plantar fasciitis is manageable, and many people find their symptoms improve with supportive strategies. A healthcare professional can help confirm the diagnosis and discuss suitable options.

General approaches often include:

• Gentle movement, especially after rest
• Supportive footwear with cushioned soles or arch support
• Warm or cool compresses to soothe discomfort
• Pacing activities to reduce strain on the feet
• Gentle stretching, if advised by a clinician

Where can I get help?

If you’re unsure whether your symptoms are plantar fasciitis, psoriatic‑related, or something else or if heel pain is affecting daily life support is available.

You can:

• Speak to your GP
• Ask for a referral to rheumatology if symptoms are persistent
• Request a review of your psoriasis or psoriatic arthritis care plan if you’re concerned about overlapping symptoms.

Sacroiliitis is inflammation of the sacroiliac joints, which sit at the base of the spine where it meets the pelvis. When these joints become irritated or inflamed, they can cause deep lower‑back or buttock pain, often worse after rest. Sacroiliitis is not contagious, and many people find their symptoms improve with the right care and support.

The sacroiliac joints help support the weight of the upper body and absorb shock when walking. When these joints become inflamed, the surrounding area can feel painful, stiff, or tender, especially after sitting or lying down for long periods.

Common signs include:

• Lower‑back or buttock pain, often deep and hard to pinpoint
• Morning stiffness
• Pain that worsens with rest and improves with gentle movement
• Discomfort when standing up after sitting
• Pain that may spread into the hips or thighs

Symptoms may come and go, and can vary depending on activity levels and inflammation.

Why it is relevant to psoriatic disease

Sacroiliitis matters in psoriatic disease because:

• It is a key feature of axial psoriatic arthritis, which affects the spine and sacroiliac joints.
• Pain may be mistaken for sciatica, muscle strain, or mechanical back pain.
• People with psoriasis may worry that new back pain means their condition is worsening.
• Sacroiliitis can occur alongside enthesitis and dactylitis, other common features of psoriatic arthritis.
• Understanding sacroiliitis helps people feel more confident about what’s happening in their back and when to seek advice.

What can I do about it?

Sacroiliitis is manageable, and many people find their symptoms improve with supportive strategies. A healthcare professional can help confirm the diagnosis and discuss suitable options.

General approaches often include:

• Gentle movement, especially after rest
• Pacing activities to avoid long periods of sitting or standing
• Warm or cool compresses to soothe discomfort
• Supportive posture, such as avoiding slumping or twisting
• Gentle stretching, if advised by a clinician

Where can I get help?

If you’re unsure whether your symptoms are sacroiliitis, psoriatic‑related, or something else or if back pain is affecting daily life support is available.

You can:

• Speak to your GP
• Ask for a referral to rheumatology if symptoms are persistent
• Request a review of your psoriasis or psoriatic arthritis care plan if you’re concerned about overlapping symptoms.

Sebopsoriasis is a skin condition that shows features of both psoriasis and seborrhoeic dermatitis. It causes redness, flaking, and thicker patches in oily areas of the skin, especially around the scalp, face, ears, and chest. Sebopsoriasis is not contagious, and many people find their symptoms manageable with the right care and support.

Sebopsoriasis appears when the skin shows a mixture of psoriasis‑like plaques and seborrhoeic dermatitis‑like scale. The patches may be greasy, yellowish, or flaky, but also slightly thicker or more defined than typical dandruff or dermatitis.

Common signs include:

• Flaky scalp, thicker than ordinary dandruff
• Redness around the nose, eyebrows, ears, or hairline
• Greasy or yellowish scale
• Itching, which may come and go
• Patches that persist rather than clearing quickly

Symptoms can vary from mild to more noticeable and may flare with stress, cold weather, or changes in skin oiliness.

Why sebopsoriasis matters in psoriatic disease

Sebopsoriasis is important to recognise because:

• It is common in people with psoriasis, especially those with scalp involvement.
• It can be mistaken for psoriasis or seborrhoeic dermatitis alone, making diagnosis less straightforward.
• People with psoriasis may worry that new facial or scalp patches mean their condition is worsening.
• Sebopsoriasis can be an early sign of psoriasis in some people.
• Understanding sebopsoriasis helps people feel more confident about what’s happening with their skin and when to seek advice.

What can I do about it?

Sebopsoriasis is manageable, and many people find their symptoms improve with supportive strategies. A healthcare professional can help confirm the cause of skin changes and discuss suitable options.

General approaches often include:

• Gentle skincare, avoiding harsh soaps or scrubbing
• Regular washing of the scalp with suitable products
• Moisturising to reduce dryness and irritation
• Monitoring flare patterns, such as stress or weather changes

Where can I get help?

If you’re unsure whether your skin changes are sebopsoriasis, psoriasis, seborrhoeic dermatitis, or something else or if patches are persistent or affecting daily life support is available.

You can:

• Speak to your GP
• Ask for a referral to dermatology if symptoms are unclear or persistent
• Request a review of your psoriasis care plan if you’re concerned about overlapping skin changes.

Tendonitis is inflammation of a tendon, the strong band of tissue that connects muscle to bone. When a tendon becomes irritated or inflamed, the area can feel painful, tender, or stiff, especially during movement. Tendonitis is not contagious, and many people find their symptoms improve with the right care and support.

Tendonitis happens when a tendon is over‑strained, irritated, or inflamed. It can affect many areas, including the shoulders, elbows, wrists, hips, knees, and heels.

Common signs include:

• Pain when moving the joint
• Tenderness when pressing the area
• Stiffness, especially after rest
• A feeling of weakness when using the affected limb
• Pain that may worsen with activity and ease with gentle movement

Symptoms may come and go, and can vary depending on activity levels and inflammation.

Why it is relevant to psoriatic disease

Tendonitis matters in psoriatic disease because:

• It can occur as part of enthesitis, a key feature of psoriatic arthritis.
• Tendon pain may be mistaken for injury or overuse, especially around the heel or elbow.
• People with psoriasis may worry that new tendon pain means their condition is worsening.
• Tendonitis can occur alongside dactylitis or other joint‑area inflammation.
• Understanding tendonitis helps people feel more confident about what’s happening in their joints and when to seek advice.

What can I do about it?

Tendonitis is manageable, and many people find their symptoms improve with supportive strategies. A healthcare professional can help confirm the diagnosis and discuss suitable options.

General approaches often include:

• Gentle movement, avoiding activities that worsen pain
• Warm or cool compresses to soothe discomfort
• Pacing activities to reduce strain on the tendon
• Supportive footwear, if the heel or foot is affected
• Gentle stretching, if advised by a clinician

Where can I get help?

If you’re unsure whether your symptoms are tendonitis, psoriatic‑related, or something else or if pain or stiffness is affecting daily life support is available.

You can:

• Speak to your GP
• Ask for a referral to rheumatology if symptoms are persistent
• Request a review of your psoriasis or psoriatic arthritis care plan if you’re concerned about overlapping symptoms.

Ulcerative colitis is a long‑term inflammatory condition that affects the large intestine (colon). It can cause diarrhoea, abdominal pain, blood in the stool, and tiredness, and symptoms often come and go in flares. Ulcerative colitis is not contagious, and many people find their symptoms improve with the right medical care and support.

It happens when the immune system becomes overactive and causes inflammation and ulcers in the lining of the colon and rectum.

Common signs include:

• Diarrhoea, often with blood or mucus
• Abdominal pain or cramping
• Urgency feeling you need to rush to the toilet
• Fatigue
• Weight changes
• Loss of appetite
• Joint aches in some people

Symptoms can vary from mild to severe, and may flare up and settle down over time.

Why it is relevant to psoriatic disease

Ulcerative colitis is important to recognise because:

• It is more common in people with psoriasis or psoriatic arthritis than in the general population.
• Psoriasis and ulcerative colitis share similar immune pathways, so they can occur together.
• Some symptoms such as joint pain, fatigue, or mouth ulcers may overlap with psoriatic arthritis, making diagnosis more complex.
• People with psoriatic disease may worry that digestive symptoms are part of their skin or joint condition.
• Treatments differ what helps psoriasis may not help ulcerative colitis, and vice versa.

Understanding ulcerative colitis helps people with psoriatic disease recognise when digestive symptoms may need separate medical attention.

What can I do about it?

Ulcerative colitis is manageable, and many people find their symptoms improve with the right medical care. A healthcare professional can help confirm the diagnosis and discuss suitable options.

General approaches often include:

• Working with a clinician to manage inflammation
• Gentle dietary adjustments if recommended
• Looking after general wellbeing, including rest and stress management
• Avoiding triggers that worsen symptoms, if known

Because ulcerative colitis affects the digestive system, it’s important to seek professional guidance rather than trying to manage symptoms alone.

Where can I get help?

If you’re unsure whether your digestive symptoms are related to ulcerative colitis, psoriatic disease, or something else or if symptoms are persistent, painful, or affecting daily life support is available.

You can:

• Speak to your GP
• Ask for a referral to a gastroenterology team
• Request a review of your psoriasis or psoriatic arthritis care plan if you’re concerned about overlapping symptoms
• Seek urgent medical advice if symptoms suddenly worsen.

Uveitis is an inflammatory condition inside the eye. It can cause eye pain, redness, blurred vision, and sensitivity to light. Symptoms can come on suddenly or gradually, and while uveitis can feel frightening, it is not contagious, and many people improve with the right medical care.

Uveitis happens when the middle layer of the eye (the uvea) becomes inflamed. This area includes the iris (the coloured part of the eye) and tissues that help nourish the retina. Inflammation here can affect vision, so early assessment is important.

Common signs include:

• Eye redness
• Eye pain or aching
• Blurred vision
• Sensitivity to light
• Floaters small specks or shadows in your vision

Uveitis can affect one eye or both, and symptoms may come and go.

Why it is relevant to psoriatic disease

Uveitis is important to recognise because:

• It is more common in people with psoriatic arthritis than in the general population.
• Psoriatic disease and uveitis share similar immune pathways, so they can occur together.
• Eye pain or blurred vision may be mistaken for eye strain or dry eyes, delaying care.
• People with psoriatic disease may worry that eye symptoms are part of a flare or medication side effect.
• Treatments differ what helps psoriasis does not treat uveitis.

Understanding uveitis helps people with psoriatic disease recognise when eye symptoms may need separate medical attention.

What can I do about it?

Uveitis is treatable, and many people find their symptoms improve with the right medical care. Because uveitis affects vision, it’s important to seek professional guidance promptly.

General approaches often include:

• Working with an eye specialist to manage inflammation
• Protecting the eyes from bright light
• Looking after general wellbeing, including rest and stress management

Where can I get help?

If you’re unsure whether your eye symptoms are related to uveitis, psoriatic disease, or something else or if symptoms are painful, sudden, or affecting daily life support is available.

You can:

• Speak to your GP
• Ask for a referral to an ophthalmology (eye) team
• Request a review of your psoriasis or psoriatic arthritis care plan if you’re concerned about overlapping symptoms
• Seek urgent medical advice if symptoms suddenly worsen.

Vitiligo is a long‑term skin condition that causes pale or white patches to appear on the skin. It happens when the cells that give skin its colour stop working. Vitiligo is not contagious, and although the patches can spread, many people find ways to manage the condition and feel confident in their skin.

Vitiligo occurs when the immune system mistakenly targets melanocytes — the cells that produce pigment (melanin). When these cells stop working, the skin loses colour in certain areas.

Common signs include:

• White or pale patches on the skin
• Symmetrical patterns, often on both sides of the body
• Changes around the eyes, mouth, hands, or joints
• White hair in affected areas
• Sensitivity to sun on pale patches

Vitiligo can affect small areas or larger sections of the body, and symptoms may change over time.

Why it is relevant to psoriatic disease

Vitiligo is important to recognise because:

• It can co‑exist with psoriasis, as both involve the immune system.
• Pale patches may be mistaken for healed psoriasis plaques, especially after treatment.
• People with psoriatic disease may worry that new colour changes are related to medication or inflammation.
• Treatments differ what helps psoriasis does not treat vitiligo.
• Both conditions can affect confidence and wellbeing, so recognising the difference can help people feel more supported.

Understanding vitiligo helps people with psoriatic disease feel more confident about what’s happening on their skin.

What can I do about it?

Vitiligo is manageable, and many people find their confidence improves with the right support. A healthcare professional can help confirm the diagnosis and discuss suitable options.

General approaches often include:

• Gentle skincare to protect pale areas
• Sun protection, as lighter patches burn more easily
• Cosmetic camouflage if desired
• Supportive wellbeing strategies to help with confidence

Where can I get help?

If you’re unsure whether your skin changes are vitiligo, psoriasis‑related, or something else or if patches are spreading or affecting your wellbeing support is available.

You can:

• Speak to your GP or dermatology team
• Ask for a review of your psoriasis or psoriatic arthritis care plan if you’re concerned about overlapping symptoms
• Request a referral if symptoms are persistent or unclear.