Back issues No.3 - 2003 / Original Study  

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An Epidemiologic Study of Taiwanese Psoriatic Patients in A Single Clinic
Hsuan-Hsiang Chen, Mei-Ping Tseng, Tsen-Fang Tsai
Dermatol Sinica 21: 216-224, 2003

An observational, analytic, cross-sectional, unicenter study was carried out in our hospital between May 1996 and December 1997. A questionnaire detailing the clinical and epidemiologic features were given to consecutive psoriatic patients and a dermatologist in his clinic then examined all patients. Both statistical and descriptive analyses were performed. Available data were obtained from 608 patients. The prevalence rate of psoriasis was 1.4% in the dermatology clinic at our hospital. The male to female ratio of our psoriatic patients was 2.1:1. The onset of age was younger in women, and the distribution curve of age at onset was different between men and women. A positive family history was reported in 20.4% of our patients, but no sex difference was found. Chronic plaque-form psoriasis was the most common clinical type of psoriasis, and nearly 50% of the patients developed their first lesion on the scalp. The most common sites of current cutaneous involvement were the extremities, scalp, and the trunk. Hypertension was the most commonly associated systemic disease, and the most frequent trigger factors were staying late at night, busy work, emotional stress, infections or common colds, trauma, and alcohol intake.

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