Psoriasis is a chronic skin condition characterized by red, itchy, and scaly patches of skin. It occurs when the immune system mistakenly speeds up the skin cell turnover process, causing new skin cells to develop too rapidly. This leads to the accumulation of dead skin cells on the surface, forming thick, silvery scales and often causing discomfort or pain. Psoriasis can affect any part of the body but commonly appears on the elbows, knees, scalp, and lower back. While the exact cause is unknown, factors like genetics, immune system dysfunction, and environmental triggers may contribute to its development. Treatment options include ointment and creams, oral medications, light therapy, and lifestyle changes to manage symptoms and reduce flare-ups.

英語での「psoriasis」の定義と意味

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