The details of the pathological manifestations of psoriasis are as follows: 1. Psoriasis vulgaris: hyperkeratosis with incomplete keratinization, neutrophilic microabscesses can be seen in the area of incomplete keratinization, also known as Munro microabscesses, the granular layer is obviously reduced or disappeared, the thickened epidermal protrusions at the base extend downward, the muscle layer above the dermal papillae is thinned, capillaries are dilated and extended and tortuous, infiltration of lymphocytes and neutrophils can be seen around; 2. Erythrodermic psoriasis: mainly the superficial dermal blood vessels are dilated, congestion is more obvious, other manifestations are similar to those of common psoriasis; 3. Pustular psoriasis: Kogoj microabscess. The pathological manifestations of psoriasis are basically the same as the clinical manifestations, and specific clinical manifestations will have corresponding pathological manifestations. The above are only typical pathological manifestations, and the pathological manifestations can be different in different patients or in the same patient, depending on the lesions.