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Reference sources
As a trusted source of information on psoriatic disease and related conditions, PAPAA uses a rigorous, evidence‑based approach. We draw on a wide range of reliable sources, including the British National Formulary (BNF), the National Institute for Health and Care Excellence (NICE), and the Medicines and Healthcare products Regulatory Agency (MHRA). This list is not exhaustive: individual pages will include direct links to key source material, but the sources below represent the core references used for our main information pages.
- Alamanos Y, Voulgari PV, Drosos AA. Incidence and prevalence of psoriatic arthritis: A systematic review. J Rheumatol 2008;35:1354-8.
- Alamino RP, Maldonado Cocco JA, Citera G, et al. Differential features between primary ankylosing spondylitis and spondylitis associated with psoriasis and inflammatory bowel disease. J Rheumatol 2011; 38(8) 1656-60
- Ameen M, Etemesi B, Managing Psoriasis in the Tropics: Community Dermatology 2009: 9 5-7
- Amyloidosis complicating psoriatic arthritis British Medical Journal 1977: 30 July: 302
- Anstey Alex, professor. Home UVB phototherapy for psoriasis :Editorials BMJ 2009;338:b607
- Baker H, Golding D, Thompson M Psoriasis and Arthritis Annals of Internal Medicine Volume 58, June 1963 No 6
- Best Practice 2010 Psoriatic arthritis, Complications (online) http: //bestpractice.bmj.com/best-practice/monograph/524/follow-up/complications.html available (accessed September 2010)
- Boehncke W, Boehncke S, Schon M Managing comorbid disease in patients with psoriasis British Medical Journal: 2010: 340: b56666
- British Nutrition Foundation 2009 Healthy varied diet (online) Available http:// www. nutrition.org.uk (accessed November 2009)
- Camapalani E, Barker J The Clinical Genetics of Psoriasis Current Genomics: 2005: 6: 51-60
- Chen YJ, Wu CY, Shen JL et al. Psoriasis independently associated with hyperleptinemia contributing to metabolic syndrome. Archives of Dermatology 2008;144:1571-1575
- Cohen MR, Reda DJ, Clegg DO. Baseline relationships between psoriasis and psoriatic arthritis: Analysis of 221 patients with active psoriatic arthritis.Department of veterans affairs cooperative study group on seronegative spondyloarthropathies. J Rheumatol 1999;26:1752-6.
- Costing statement: Ustekinumab for the treatment of adults with moderate to severe psoriasis (2009) NICE technology appraisal guidance 180 (TA180) Available from: www. nice .org.uk/TA180
- de Menezes Ettinger JE, Azaro E, de Souza CA et al. Remission of psoriasis after open gastric bypass. Obes Surg 2006; 16:94-7
- Duffy KC; Abstract and oral presentation at Society for Investigative Dermatology Meeting (SID), Montreal, Canada 2009
- Eczema, pruritus, dry skin conditions, Emollients: 380 – 384: MIMS October 2009
- Estimated prevalence of psoriasis obtained from costing template and report for adalimumab for the treatment of adults with psoriasis (2008). NICE technology appraisal guidance 146 (TA146). Available from: www. nice .org.uk/TA146
- Estimated proportion of people with severe psoriasis eligible for biological therapy obtained from costing templates and reports for TA103 and TA146. (2006) Available from: www. nice .org.uk/TA103 and www. nice .org.uk/TA146
- Feldman S, Advances in Psoriasis Treatment. Dermatology Online Journal 2004 Volume 6, Number 1
- Finlay A, Corvest M, Smadja C, Lefrancois P, Myon E, Taieb Ch Psoriasis and Current Life: Preliminary Results on 527 Subjects Programmes Pharmaco-Economiques
- Fladman D Psoriatic arthritis (online www. smartpatient.net accessed June 2001)Psoriasis Resource: An active approach to helping arthritis National psoriasis Foundation Volume 1, Number 2, July 1999
- Food standards agency 2009 Folic acid fortification (online) Available http:// www. food. gov.uk/healthiereating/folicfortification / (accessed November 2009)
- Fortune, D.G., Main, C.J., O'Sullivan, T.M. & Griffiths C.E.M. (1997). Quality of life in patients with psoriasis: the contribution of clinical variables and psoriasis-specific stress. British Journal of Dermatology, 137, 755-760.
- Fortune, D.G., Richards, H.L., Kirby, B., McElhone, K., Markham, T., Rogers, S., Main, C.J. & Griffiths, C.E.M. (2003). Psychological distress impairs clearance of psoriasis in patients treated with photochemotherapy. Archives of Dermatology, 139, 752-756.
- Fortune, D.G., Richards, H.L., Main, C.J. & Griffiths, C.E.M. (1998). What patients with psoriasis believe about their condition. Journal of the American Academy of Dermatology, 137, 53-59.
- Fortune, D.G., Richards, H.L., Main, C.J. & Griffiths, C.E.M. (2000). Pathological worrying, illness perceptions and disease severity in patients with psoriasis. British Journal of Health Psychology, 5, 71-82.
- Gelfand JM, Gladman DD, Mease PJ, et al. Epidemiology of psoriatic arthritis in the population of the united states. J Am Acad Dermatol 2005;53:573.
- Gelfand JM, Weinstein R, Porter SB et al Prevalence and Treatment of Psoriasis in the United Kingdom: A Population-Based Study Archives of Dermatology. 2005; 141:1537-1541.
- Gisondi P, Del Giglio M, Di Francesco V et al. Weight loss improves the response of obese patients with moderate-to-severe chronic plaque psoriasis to low-dose cyclosporine therapy: a randomized, controlled, investigator-blinded clinical trial. American Journal of Clinical Nutrition 2008; 88:1242-7.
- Gladman DD, Antoni C, Mease P, Clegg DO, Nash P. Psoriatic arthritis: epidemiology, clinical features, course, and outcome. Annals of Rheumatic Disease. 2005;64(Suppl 11):ii 14- ii17
- Gladman DD, Shuckett R, Russell ML, Thorne JC, Schachter RK. Psoriatic arthritis (psa)--an analysis of 220 patients. Q J Med 1987;62:127-41.
- Griffiths C, Barker J. Pathogenesis and clinical features of psoriasis. The Lancet: 370: 9583: 263 - 271, 21 July 2007
- Griffiths C, Pathogenesis and clinical features of psoriasis The Lancet : 370: 263 - 271, 21 July 2007
- Griffiths CEM, Strober BE ... et al, Comparison of Ustekinumab and Etanercept for Moderate-to-Severe Psoriasis NEJM 2010 Number 2; Vol 362:118-128
- Herron MD, Hinckley M, Hoffman MS et al. Impact of Obesity and Smoking on Psoriasis Presentation and Management. Archives of Dermatology. 2005;141:1527-1534.
- Higa-Sansone G, Szomstein S, Soto F et al. Psoriasis remission after laparoscopic Roux-en-Y gastric bypass for morbid obesity. Obesity Surgery 2004; 14:1132-4.
- Historic background archive
- Huerta C, Rivero E, Rodríguez LA. Incidence and risk factors for psoriasis in the general population. Archives of Dermatology 2007; 143: 1559-1565. CrossRef | PubMed
- Ibrahim G, Waxman R, Helliwell PS. The prevalence of psoriatic arthritis in people with psoriasis. Arthritis Care & Research 2009; 61(10):1373-1378.
- Jones W When ignorance is not bliss British Medical Journal: 2003: 327:877
- Jowett S, Ryan T. 1985. Skin Diseases and handicap: An analysis of the impact of skin conditions. Social Science Medicine 20: 425-9
- Jowett, S. & Ryan, T. (1985). Dermatology patients and their doctors. Clinical and Experimental Dermatology, 10, 246-254.
- Kaye JA, Li L, Jick SS. Incidence of risk factors for myocardial infarction and other vascular diseases in patients with psoriasis. British Journal of Dermatology 2008; 159:895-902
- Koek M, Buskins E, van Weelden H, Steegmans P, Bruijnzeel-Koomen C, Sigurdsson V. Home versus outpatient ultraviolet B phototherapy for mild to severe psoriasis; pragmatic multicentre randomized controlled non-inferiority trial (PLUTO study) British Medical Journal 2009:338:b1542 doi:10.1136/bmkj.b1542
- Krueger JG, Bowcock A. Psoriasis pathophysiology: Current concepts of pathogenesis. Ann Rheum Dis 2005;64 Suppl 2:ii30-6.
- Lapsley P Referral management schemes are damaging patients' interests British Medical Journal 2007 334: 156
- Lebwohl M, Psoriasis The Lancet : 361: 1197 - 204, 5 April 2003
- Madison, Isenberg, Woo & Glass, Oxford Textbook of Rheumatology 2004 page 751
- McHugh NJ, Balachrishnan C, Jones SM. Progression of peripheral joint disease in psoriatic arthritis: A 5-yr prospective study. Rheumatology (Oxford) 2003;42:778-83.
- Menter A, Griffiths C, Current and future management of psoriasis The Lancet: 370: 272 – 284, July 2007
- Mitchell T, Penzer R Psoriasis at your fingertips A family connection?: 4 – 7 2007 - Class Publishing, London.
- Moll J Psoriatic Spondylitis:Clinical Radiological and Familial Aspects Proc. roy Soc Med Volume 67 January 1974
- Naldi L, Parazzin F, Peli L, Chatenoud L, Cainelli T Dietary factors and the risk of psoriasis British Journal of Dermatology 1996 Jan: 134 (1) 101-6
- Naldi, Peli L, Parazzini F (1999) Association of early stage psoriasis with smoking and male alcohol consumption Archives of Dermatology. 1999:135:1479-1484
- Napkin Psoriasis British Medical Journal 1971: 21 August: 443 - 444
- Office of National Statistics give the United Kingdom population of 66,796,800 as at latest release date of June 2019 [accessed 7th September 2020]
- Pattison E, Harrison BJ, Griffiths CE, Silman AJ, Bruce IN. Environmental risk factors for the development of psoriatic arthritis: results from a case-control study. Annals of Rheumatic Disease. 2008 May;67(5):672-6. Epub 2007 Sep 6._
- Pietrzak A, Kadzielewski J, Janowski K et al. Lipoprotein (a) in patients with psoriasis: associations with lipid profiles and disease severity. International Journal of Dermatol 2009;48:379-87.
- Psoriasis and the Risk of Diabetes and Hypertension: A Prospective Study of US Female Nurses Archives of Dermatology .2009;145 (4):379-382.
- Psoriatic Arthritis News and Views Psoriatic Arthritis Medical News Vol 3 Issue 14 - August 15 2003
- Psoriatic Arthritis Rheumatic Disease in the Adult Child Chapter 7
- Psoriatic Arthritis The Facts Gladman D, Chandran V: Patterns of psoriatic arthritis: 2009: 7-8. Oxford University Press.
- Psoriatic arthritis: to lump or to split? British Medical Journal 1976: 28 August: 491
- Qureshi AA, Choi HK, Setty AR, Curhan GC. Psoriasis and the risk of diabetes and hypertension: a prospective study of US female nurses. Archives of Dermatology 2009;145:379-82.
- Radtke M, Reich K, Blome C, et al. Prevalence and clinical features of psoriatic arthritis and joint complaints in 2009 patients with psoriasis: results of a German national survey. J Eur Academy of Dermatology Venereol. 2009 Mar 4. (Epub ahead of print)
- Ravelli A, Martini A Juvenile Idiopathic Arthritis The Lancet: 369: 9563: 767 - 778, 3 March 2007
- Richards, H.L., Fortune, D.G., Griffiths, C.E.M., Main, C.J. (2001). The contribution of perceptions of stigmatisation to disability in patients with psoriasis. Journal of Psychosomatic Research, 50, 11-15.
- Ritchlin CT, Kavanaugh A, Gladman DD, et al. Treatment recommendations for psoriatic arthritis. Ann Rheum Dis 2009;68:1387-94.
- Rogers R, Watt I, Dieppe P Arthritis in Saxon and Mediaeval skeletons British Medical Journal 1981: 283: 19 - 26 December: 1668 - 1669
- Scottish Intercollegiate Guidelines Network (SIGN). Diagnosis and management of psoriasis and psoriatic arthritis in adults. Edinburgh: SIGN; 2010. (SIGN publication no. 121). - cited 12 Oct 2010. Available from: www. sign .ac.uk
- Setty A R, Curhan G, Choi H K Smoking and the Risk of Psoriasis in Women Nurses Health Study II: The American Journal of Medicine, Volume 120: 11 (November 2007).
- Smith CH, Barker J, Psoriasis and its management British Medical Journal: 2006 333:380-384 19 August 2006
- Smith CH, Barker JNWN Psoriasis and its management British Medical Journal: 2006 333:380-384 (19 August)
- Stern R, Psoriasis The Lancet : 350: 349 - 53, 2 August 1997
- Stoll ML, Punaro M. Psoriatic juvenile idiopathic arthritis: A tale of two subgroups. Curr Opin Rheumatol 2011; 23(5) 437-43
- Van Der Vleuten C, De Jong E, Rulo E, Gerritsen M and Kerkhof P. In patient treatment with calcipotriol versus dithranol in refractory psoriasis Clinical report. Eur J Dermatol 1995, 5:676-9
- Wandel S, Juni P...et al Effects of glucosamine, choddroitin, or placebo in patients with osteoarthritis of hip or knee: network meta-analysis BMJ 2010;341:c4675 doi:10.1136/bmj.c4675
- Warin A Understanding Psoriasis, Common forms of psoriasis: Pages 16 – 17. 2005. Family Doctor series - The British Medical Association
- Weatherhead S, Robson S, Reynolds J Pregnancy Plus: Management of psoriasis in pregnancy BMJ 2007. 334. Pages 1218-1220
- Weatherhead S, Robson S, Reynolds J Pregnancy Plus: Management of psoriasis in pregnancy British Medical Journal 2007: 334: 1218-1220
- Williams HC Smoking and Psoriasis BMJ 1994;308:428-429
- Wright V, Helliwell P Psoriatic Arthritis Topical Reviews May 1992 No 21
- Alamanos Y, Voulgari PV, Drosos AA. Incidence and prevalence of psoriatic arthritis: A systematic review. J Rheumatol 2008;35:1354-8.
- Alamino RP, Maldonado Cocco JA, Citera G, et al. Differential features between primary ankylosing spondylitis and spondylitis associated with psoriasis and inflammatory bowel disease. J Rheumatol 2011; 38(8) 1656-60
- Ameen M, Etemesi B, Managing Psoriasis in the Tropics: Community Dermatology 2009: 9 5-7
- Amyloidosis complicating psoriatic arthritis British Medical Journal 1977: 30 July: 302
- Anstey Alex, professor. Home UVB phototherapy for psoriasis :Editorials BMJ 2009;338:b607
- Baker H, Golding D, Thompson M Psoriasis and Arthritis Annals of Internal Medicine Volume 58, June 1963 No 6
- Best Practice 2010 Psoriatic arthritis, Complications (online) http: //bestpractice.bmj.com/best-practice/monograph/524/follow-up/complications.html available (accessed September 2010)
- Boehncke W, Boehncke S, Schon M Managing comorbid disease in patients with psoriasis British Medical Journal: 2010: 340: b56666
- British Nutrition Foundation 2009 Healthy varied diet (online) Available http:// www. nutrition.org.uk (accessed November 2009)
- Camapalani E, Barker J The Clinical Genetics of Psoriasis Current Genomics: 2005: 6: 51-60
- Chen YJ, Wu CY, Shen JL et al. Psoriasis independently associated with hyperleptinemia contributing to metabolic syndrome. Archives of Dermatology 2008;144:1571-1575
- Cohen MR, Reda DJ, Clegg DO. Baseline relationships between psoriasis and psoriatic arthritis: Analysis of 221 patients with active psoriatic arthritis.Department of veterans affairs cooperative study group on seronegative spondyloarthropathies. J Rheumatol 1999;26:1752-6.
- Costing statement: Ustekinumab for the treatment of adults with moderate to severe psoriasis (2009) NICE technology appraisal guidance 180 (TA180) Available from: www. nice .org.uk/TA180
- de Menezes Ettinger JE, Azaro E, de Souza CA et al. Remission of psoriasis after open gastric bypass. Obes Surg 2006; 16:94-7
- Duffy KC; Abstract and oral presentation at Society for Investigative Dermatology Meeting (SID), Montreal, Canada 2009
- Eczema, pruritus, dry skin conditions, Emollients: 380 – 384: MIMS October 2009
- Estimated prevalence of psoriasis obtained from costing template and report for adalimumab for the treatment of adults with psoriasis (2008). NICE technology appraisal guidance 146 (TA146). Available from: www. nice .org.uk/TA146
- Estimated proportion of people with severe psoriasis eligible for biological therapy obtained from costing templates and reports for TA103 and TA146. (2006) Available from: www. nice .org.uk/TA103 and www. nice .org.uk/TA146
- Farzad A, et al. Prevalence of psoriatic arthritis in patients with psoriasis: A systematic review and meta-analysis of observational and clinical studies. PMID: 29928910 DOI: 10.1016/j.jaad.2018.06.027
- Feldman S, Advances in Psoriasis Treatment. Dermatology Online Journal 2004 Volume 6, Number 1
- Finlay A, Corvest M, Smadja C, Lefrancois P, Myon E, Taieb Ch Psoriasis and Current Life: Preliminary Results on 527 Subjects Programmes Pharmaco-Economiques
- Fladman D Psoriatic arthritis (online www. smartpatient.net accessed June 2001)Psoriasis Resource: An active approach to helping arthritis National psoriasis Foundation Volume 1, Number 2, July 1999
- Flatø B, Lien G, Smerdel-Ramoya A, Vinje O: Juvenile psoriatic arthritis: longterm outcome and differentiation from other subtypes of juvenile idiopathic arthritis J Rheumatol. 2009 Mar;36(3):642-50. doi: 10.3899/jrheum.080543. Epub 2009 Feb 4
- Food standards agency 2009 Folic acid fortification (online) Available http:// www. food. gov.uk/healthiereating/folicfortification / (accessed November 2009)
- Fortune, D.G., Main, C.J., O'Sullivan, T.M. & Griffiths C.E.M. (1997). Quality of life in patients with psoriasis: the contribution of clinical variables and psoriasis-specific stress. British Journal of Dermatology, 137, 755-760.
- Fortune, D.G., Richards, H.L., Kirby, B., McElhone, K., Markham, T., Rogers, S., Main, C.J. & Griffiths, C.E.M. (2003). Psychological distress impairs clearance of psoriasis in patients treated with photochemotherapy. Archives of Dermatology, 139, 752-756.
- Fortune, D.G., Richards, H.L., Main, C.J. & Griffiths, C.E.M. (1998). What patients with psoriasis believe about their condition. Journal of the American Academy of Dermatology, 137, 53-59.
- Fortune, D.G., Richards, H.L., Main, C.J. & Griffiths, C.E.M. (2000). Pathological worrying, illness perceptions and disease severity in patients with psoriasis. British Journal of Health Psychology, 5, 71-82.
- Gelfand JM, Gladman DD, Mease PJ, et al. Epidemiology of psoriatic arthritis in the population of the united states. J Am Acad Dermatol 2005;53:573.
- Gelfand JM, Weinstein R, Porter SB et al Prevalence and Treatment of Psoriasis in the United Kingdom: A Population-Based Study Archives of Dermatology. 2005; 141:1537-1541.
- Gisondi P, Del Giglio M, Di Francesco V et al. Weight loss improves the response of obese patients with moderate-to-severe chronic plaque psoriasis to low-dose cyclosporine therapy: a randomized, controlled, investigator-blinded clinical trial. American Journal of Clinical Nutrition 2008; 88:1242-7.
- Gladman DD, Antoni C, Mease P, Clegg DO, Nash P. Psoriatic arthritis: epidemiology, clinical features, course, and outcome. Annals of Rheumatic Disease. 2005;64(Suppl 11):ii 14- ii17
- Gladman DD, Shuckett R, Russell ML, Thorne JC, Schachter RK. Psoriatic arthritis (psa)--an analysis of 220 patients. Q J Med 1987;62:127-41.
- Griffiths C, Barker J. Pathogenesis and clinical features of psoriasis. The Lancet: 370: 9583: 263 - 271, 21 July 2007
- Griffiths C, Pathogenesis and clinical features of psoriasis The Lancet : 370: 263 - 271, 21 July 2007
- Griffiths CEM, Strober BE ... et al, Comparison of Ustekinumab and Etanercept for Moderate-to-Severe Psoriasis NEJM 2010 Number 2; Vol 362:118-128
- Grjibovski A, Olsen A, Magnus P, Harris J. Psoriasis in Norwegian twins: contribution of genetic and environmental effects. PMID: 17958839 DOI: 10.1111/j.1468-3083.2007.02268.x
- Herron MD, Hinckley M, Hoffman MS et al. Impact of Obesity and Smoking on Psoriasis Presentation and Management. Archives of Dermatology. 2005;141:1527-1534.
- Higa-Sansone G, Szomstein S, Soto F et al. Psoriasis remission after laparoscopic Roux-en-Y gastric bypass for morbid obesity. Obesity Surgery 2004; 14:1132-4.
- Historic background archive
- Huerta C, Rivero E, Rodríguez LA. Incidence and risk factors for psoriasis in the general population. Archives of Dermatology 2007; 143: 1559-1565. CrossRef | PubMed
- Ibrahim G, Waxman R, Helliwell PS. The prevalence of psoriatic arthritis in people with psoriasis. Arthritis Care & Research 2009; 61(10):1373-1378.
- Jones W When ignorance is not bliss British Medical Journal: 2003: 327:877
- Jowett S, Ryan T. 1985. Skin Diseases and handicap: An analysis of the impact of skin conditions. Social Science Medicine 20: 425-9
- Jowett, S. & Ryan, T. (1985). Dermatology patients and their doctors. Clinical and Experimental Dermatology, 10, 246-254.
- Kaye JA, Li L, Jick SS. Incidence of risk factors for myocardial infarction and other vascular diseases in patients with psoriasis. British Journal of Dermatology 2008; 159:895-902
- Koek M, Buskins E, van Weelden H, Steegmans P, Bruijnzeel-Koomen C, Sigurdsson V. Home versus outpatient ultraviolet B phototherapy for mild to severe psoriasis; pragmatic multicentre randomized controlled non-inferiority trial (PLUTO study) British Medical Journal 2009:338:b1542 doi:10.1136/bmkj.b1542
- Krueger JG, Bowcock A. Psoriasis pathophysiology: Current concepts of pathogenesis. Ann Rheum Dis 2005;64 Suppl 2:ii30-6.
- Lapsley P Referral management schemes are damaging patients' interests British Medical Journal 2007 334: 156
- Lebwohl M, Psoriasis The Lancet : 361: 1197 - 204, 5 April 2003
- Madison, Isenberg, Woo & Glass, Oxford Textbook of Rheumatology 2004 page 751
- McHugh NJ, Balachrishnan C, Jones SM. Progression of peripheral joint disease in psoriatic arthritis: A 5-yr prospective study. Rheumatology (Oxford) 2003;42:778-83.
- Menter A, Griffiths C, Current and future management of psoriasis The Lancet: 370: 272 – 284, July 2007
- Mitchell T, Penzer R Psoriasis at your fingertips A family connection?: 4 – 7 2007 - Class Publishing, London.
- Moll J Psoriatic Spondylitis:Clinical Radiological and Familial Aspects Proc. roy Soc Med Volume 67 January 1974
- Naldi L, Parazzin F, Peli L, Chatenoud L, Cainelli T Dietary factors and the risk of psoriasis British Journal of Dermatology 1996 Jan: 134 (1) 101-6
- Naldi, Peli L, Parazzini F (1999) Association of early stage psoriasis with smoking and male alcohol consumption Archives of Dermatology. 1999:135:1479-1484
- Napkin Psoriasis British Medical Journal 1971: 21 August: 443 - 444
- Pattison E, Harrison BJ, Griffiths CE, Silman AJ, Bruce IN. Environmental risk factors for the development of psoriatic arthritis: results from a case-control study. Annals of Rheumatic Disease. 2008 May;67(5):672-6. Epub 2007 Sep 6._
- Pietrzak A, Kadzielewski J, Janowski K et al. Lipoprotein (a) in patients with psoriasis: associations with lipid profiles and disease severity. International Journal of Dermatol 2009;48:379-87.
- Psoriasis and the Risk of Diabetes and Hypertension: A Prospective Study of US Female Nurses Archives of Dermatology .2009;145 (4):379-382.
- Psoriatic Arthritis News and Views Psoriatic Arthritis Medical News Vol 3 Issue 14 - August 15 2003
- Psoriatic Arthritis Rheumatic Disease in the Adult Child Chapter 7
- Psoriatic Arthritis The Facts Gladman D, Chandran V: Patterns of psoriatic arthritis: 2009: 7-8. Oxford University Press.
- Psoriatic arthritis: to lump or to split? British Medical Journal 1976: 28 August: 491
- Qureshi AA, Choi HK, Setty AR, Curhan GC. Psoriasis and the risk of diabetes and hypertension: a prospective study of US female nurses. Archives of Dermatology 2009;145:379-82.
- Radtke M, Reich K, Blome C, et al. Prevalence and clinical features of psoriatic arthritis and joint complaints in 2009 patients with psoriasis: results of a German national survey. J Eur Academy of Dermatology Venereol. 2009 Mar 4. (Epub ahead of print)
- Ravelli A, Martini A Juvenile Idiopathic Arthritis The Lancet: 369: 9563: 767 - 778, 3 March 2007
- Richards, H.L., Fortune, D.G., Griffiths, C.E.M., Main, C.J. (2001). The contribution of perceptions of stigmatisation to disability in patients with psoriasis. Journal of Psychosomatic Research, 50, 11-15.
- Ritchlin CT, Kavanaugh A, Gladman DD, et al. Treatment recommendations for psoriatic arthritis. Ann Rheum Dis 2009;68:1387-94.
- Rogers R, Watt I, Dieppe P Arthritis in Saxon and Mediaeval skeletons British Medical Journal 1981: 283: 19 - 26 December: 1668 - 1669
- Scottish Intercollegiate Guidelines Network (SIGN). Diagnosis and management of psoriasis and psoriatic arthritis in adults. Edinburgh: SIGN; 2010. (SIGN publication no. 121). - cited 12 Oct 2010. Available from: www. sign .ac.uk
- Setty A R, Curhan G, Choi H K Smoking and the Risk of Psoriasis in Women Nurses Health Study II: The American Journal of Medicine, Volume 120: 11 (November 2007).
- Smith CH, Barker J, Psoriasis and its management British Medical Journal: 2006 333:380-384 19 August 2006
- Smith CH, Barker JNWN Psoriasis and its management British Medical Journal: 2006 333:380-384 (19 August)
- Stern R, Psoriasis The Lancet : 350: 349 - 53, 2 August 1997
- Stoll ML, Punaro M. Psoriatic juvenile idiopathic arthritis: A tale of two subgroups. Curr Opin Rheumatol 2011; 23(5) 437-43
- Van Der Vleuten C, De Jong E, Rulo E, Gerritsen M and Kerkhof P. In patient treatment with calcipotriol versus dithranol in refractory psoriasis Clinical report. Eur J Dermatol 1995, 5:676-9
- Wandel S, Juni P...et al Effects of glucosamine, choddroitin, or placebo in patients with osteoarthritis of hip or knee: network meta-analysis BMJ 2010;341:c4675 doi:10.1136/bmj.c4675
- Warin A Understanding Psoriasis, Common forms of psoriasis: Pages 16 – 17. 2005. Family Doctor series - The British Medical Association
- Weatherhead S, Robson S, Reynolds J Pregnancy Plus: Management of psoriasis in pregnancy BMJ 2007. 334. Pages 1218-1220
- Weatherhead S, Robson S, Reynolds J Pregnancy Plus: Management of psoriasis in pregnancy British Medical Journal 2007: 334: 1218-1220
- Williams HC Smoking and Psoriasis BMJ 1994;308:428-429
- Wright V, Helliwell P Psoriatic Arthritis Topical Reviews May 1992 No 21
- Manhart R, Rich P. Nail psoriasis. Clin Exp Rheumatol. 2015 Sep-Oct;33(5 Suppl 93):S7-13. Epub 2015 Oct 15. PMID: 26472140.
- Armstrong AW, Tuong W, Love TJ, Carneiro S, Grynszpan R, Lee SS, Kavanaugh A. Treatments for nail psoriasis: a systematic review by the GRAPPA Nail Psoriasis Work Group. J Rheumatol. 2014 Nov;41(11):2306-14. doi: 10.3899/jrheum.140881. PMID: 25362716