Why does psoriasis shed a lot of flakes? Psoriasis, as its name suggests, causes a lot of inconvenience in life as the affected area sheds flakes every day. In addition to spending time cleaning up, we are also afraid that the large amount of flakes shed will be seen by others and mistaken as a source of infection, so we avoid it. In fact, we all shed a large amount of dander every day, but under normal circumstances, these dander are single-celled, fine, unconnected, invisible to the naked eye; while psoriasis patients due to abnormal epidermal cell keratinization, resulting in hundreds of keratinocytes shed in succession, and shed more quickly, forming “silver flakes “. Some patients with initial onset of psoriasis belong to the punctate type, where small red papules may appear all over the body with a layer of scales, as few as a few dozen or as many as a hundred or a thousand. If the papules are linked together, they form plaques, which may also be connected into patches, as seen in plaque psoriasis. In severe cases, large red plaques covering the whole body will appear, and more skin will peel off, with the plaques covering more than 80% of the body area, becoming erythrodermic psoriasis. Some patients have only a few lesions, but they are very red, could they be erythrodermic? No. Whether it is erythrodermic or not depends only on the area, not on the color. Can these flakes transmit psoriasis? Even if there are more, these flakes are no different from dandruff, the composition is the same, it is not pretty, but certainly not contagious. Psoriasis may be induced and aggravated by foreign bacterial infections (such as colds, fevers, pharyngitis, etc.), but psoriasis does not cause skin infections. The patient’s skin is normally resistant to infection, especially because the diseased skin renews particularly quickly and bacteria cannot stay on the skin surface and leave with the scales, so psoriatic skin is never infected by bacteria.