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Dermatology
Author(s) -
Knowsley Sibley Dermal
Publication year - 1966
Publication title -
medical journal of australia
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.904
H-Index - 131
eISSN - 1326-5377
pISSN - 0025-729X
DOI - 10.5694/j.1326-5377.1966.tb97611.x
Subject(s) - dermatology , medicine
THE author reviews available published data on the statistical and epidemiological aspects of the relationship of psoriasis and arthritis and puts forward new data bearing on the problem. The prevalence of psoriasis in subjects with "rheumatoid arthritis" of all types is between 3% and 6%, a proportion two to three times higher than that found in the population at large, which is between 1% and 2%. The prevalence of psoriasis in a sample of several hundred hospital patients with "Rose-Waaler positive" rheumatoid arthritis was found to be between 1·2% and 2%. The occasional association of these two diseases is thus likely to be chance. In a smaller sample of patients with a "RoseWaaler negative" polyarthritis of rheumatoid type, psoriasis was five times as common as in the seropositive sample, being found in 9· 6% of subjects. The difference is highly significant and the association of psoriasis and this type of arthritis cannot therefore be ascribed to chance.