Psoriasis is an autoimmune disease based on a genetic predisposition. From this it is clear that this is not an infectious or contagious disease. The causes of psoriasis are unknown. The disease has a chronic, progressive nature, proceeds with periods of exacerbation and remission. Psoriasis is manifested by lesions of the skin, nails, sometimes joints (psoriatic arthritis), mucous eyes, mouth.
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