Psoriasis

Psoriasis, commonly known as psoriasis, is a common chronic inflammatory skin disease that is prone to recurrence. The characteristic damage is red pimples or plaques covered with multiple layers of silvery white scales. Young adults have the highest incidence, more men than women, and more in the north than in the south. They tend to occur or aggravate in spring and winter, and alleviate in summer and autumn. The etiology and pathogenesis are not completely clear. Studies have found that the pathogenesis of the disease is related to genetic factors, infection with streptococcus, immune dysfunction, metabolic disorders, and endocrine changes. There are four clinical types: vulgaris, pus, erythrodermic, and arthropathy. Psoriasis vulgaris is the most common and milder. The disease is chronic and easily recurs after cure.

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