Why do I suddenly have psoriasis?

The immune system and genetics play major roles in developing psoriasis but there are usually triggers that initiate flares. The autoimmune process causes the skin cells to shed at an abnormally fast rate, which causes the buildup of thick, red, scaly plaques. Some common triggers of psoriasis flares are illnesses that weaken the immune system like strep infection, stress, and physical trauma.

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