Hit or myth?

Psoriasis and psoriatic arthritis (PsA) are familiar to many of us, but the way other people talk and think about the conditions often isn’t. Persistent myths can add to the emotional burden, affect how friends, family and employers respond, and even influence how quickly symptoms are recognised and treated.

So, let’s explore some common myths:

It’s just a skin problem: Psoriasis and PsA are immune‑mediated, systemic conditions, not just skin deep. They are linked with inflammation throughout the body and higher risks of conditions such as cardiovascular disease, diabetes and depression.

Psoriasis is contagious: Psoriasis is not an infection and cannot be passed on by touch, sharing towels, or being close to someone with visible plaques. It develops due to a mix of genetic, immune and environmental factors, not germs.

Psoriatic disease only affects older people: Both psoriasis and PsA can affect adults of any age, and children can develop psoriasis too. The idea that it is only “wear and tear” or “old people’s arthritis” is inaccurate and can delay referral and diagnosis.

If you have psoriasis, you will definitely get psoriatic arthritis: Around a third of people with psoriasis develop PsA, meaning most never do, but the risk is higher than in the general population. Because of that increased risk, it is important for anyone with psoriasis to report new joint pain, swelling or stiffness promptly.

You can’t have PsA without obvious psoriasis: Most people with PsA do have, or will develop, psoriasis, often with nail changes or scalp involvement. However, a minority develop PsA without clear skin plaques, which can make diagnosis more challenging.

Skin symptoms must come before joint symptoms: For many, psoriasis appears first, sometimes years before PsA, but in some people the timing is different. Joint symptoms can appear around the same time as skin changes, or even before psoriasis is recognised.

There’s a simple blood test for psoriatic arthritis: There is no single, definitive blood test that can diagnose PsA. Diagnosis usually relies on a combination of history, physical examination, blood tests (to rule out other causes) and imaging such as ultrasound or MRI.

Painkillers are enough to treat psoriatic arthritis: Pain relief medicines like NSAIDs may ease pain and stiffness but do not control the underlying inflammation or prevent joint damage. Disease‑modifying treatments, which target the immune response, are often needed to protect joints and long‑term health.

If my skin/joints look better, I can just stop treatment: Psoriatic disease is usually lifelong, with quieter phases and flares. Stopping or changing treatment without medical advice can lead to flare‑ups and may limit future options.

Nothing I do can help, only medicines matter: Medicines are central to managing psoriatic disease, but they are only one part of the picture. Physical activity, sleep, stopping smoking, caring for mental health and healthy weight management can all support treatment and quality of life, even though they do not replace prescribed therapies.

Key message

Understanding the truth behind these myths can make a real difference, from seeking help sooner to feeling more confident about treatment decisions. If you are worried about symptoms, treatment side‑effects or your risk of psoriatic arthritis, talk to your GP, dermatologist or rheumatology team rather than managing alone.