The shape of the rash in psoriasis includes plaques, dots, and coins. Psoriasis is an immune-related chronic relapsing inflammatory disease, and its etiology may be related to genetics, the environment, and factors such as infection, trauma, and endocrinology. The clinical manifestation of psoriasis is a red papule, which develops into a scaly erythematous spot or plaque with various shapes, such as plaque, dribble, coin, map, and oyster shell, etc. A few of the lesions may involve the mucous membrane of the tongue, which may appear as a furrowed tongue, and if the nail is infringed upon, it may appear as a thimble-like depression, lobe-like hemorrhage, etc. The skin rash of psoriasis is of various shapes, such as a plaque, dot-drop, coin, map, and oyster shell. The rash of psoriasis is in various shapes, and it is recommended that patients go to regular hospitals to consult doctors and learn about the relevant matters.