Psoriasis develops slowly and easily recurs, often appearing in patients' scalp and limbs; Psoriasis begins with a red papule, about the size of mung beans; After that, the papules gradually expanded and merged into brown-red patches of different sizes and shapes, with clear boundaries with the skin surface. White scales or dry gray-white layers will appear on the surface, and punctate bleeding will appear after scales.

Psoriasis patients should pay attention to diet: eat less spicy and greasy food in life, so as not to stimulate the skin, and the diet should be light; We should also strengthen physical exercise and improve our own resistance. Keeping a happy and relaxed mood is of great help to the treatment of psoriasis.