There are also symptoms of psoriasis. Psoriasis generally begins to subside from the trunk and upper limbs, the lower limbs subside slowly, and the scalp, hands, feet and joints subside the slowest. Morphologically, psoriasis punctata and psoriasis coin subsided relatively quickly, while psoriasis plaque, psoriasis map, psoriasis verrucosa and psoriasis shell subsided relatively slowly. During the regression period of psoriasis, the color of everyone's skin lesions changed from red to light red, from crimson to reddish brown, the color became lighter and lighter, the scales gradually decreased from more to less, and the skin lesions gradually became thinner and flatter from thick.
There are also some skin lesions that gradually shrink from the edge and appear faded rings; Some lesions first fade from the center to form a ring or semi-ring, and the normal skin in the middle gradually expands to make it completely fade; Some large lesions first differentiated from the middle and became several small pieces, and finally the lesions completely subsided.