Epidemiological characteristic analysis of 4 523 patients with psoriasis vulgaris
Zhao Na1, Wu Weizhi1, Pan Futang1, Wei Baojian1 , Dong Lu1 , Yang Ping2
1 Shandong Provincial Institute of Dermatology and Venereology, Shandong Academy of Medical Sciences, Jinan 250022, China; 2 School of Public Health of Shandong University
Abstract：Objective To investigate and summarize the epidemiological characteristics of patients with psoriasis vulgaris in the clinic of a hospital for skin diseases. Methods A epidemiology investigation was performed on 4 523 patients with psoriasis vulgaris in a Hospital Information System (HIS) data base of a hospital for skin diseases. SPSS 17. 0 were used for statistical analysis. Results The ratio of male to female in the group was 1.43∶1. The average of the first onset ages was 26.99± 13.74. 83.53% patients had early age onset while 16.47% had late age onset. The average course of all the patients with psoriasis was 7.43±8.65 years. The most common affected parts were lower limbs 89.74%. The most common lesion shape was plaque type 47.29%. 57.42% patients were in the stable stage. 24.23% patients had a family history of psoriasis. 26.18% early-onset patients and 13.83% late-onset patients had a family history. Statistic analysis showed that there was significant differences between the two groups (P＜0.05). The most common inducing factor was biological factor (43.99%). Most patients suffered from the disease in winter (47.88%) or spring(47.31%);14.87% patients had joint symptoms and 5.81% patients were confirmed with psoriasis arthritis. Conclusion Male patients were more than female ones in the group. The number of early-onset patients was more than that of the late-onset patients. Most patients had a long course. The most common affected parts were limbs. Chronic plaques psoriasis was the most common. Most patients were in the stable stage and were mild and moderate. The rate of the family history in the early-onset patients was more than that of late-onset patients. Biological factor and season factor were the most common inducing factors in the group. Patients with joint symptoms may have a probability combined with psoriasis arthritis.
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