Plaque psoriasis is diagnosed based on clinical appearance, history, and, if necessary, a skin biopsy. A healthcare provider ...

Blood cultures were negative. The primary skin lesions are erythematous plaques with violaceous borders measuring up to 10 cm, and there are centrally located papulovesicles (see Figure 1).

Pruritic urticarial papules and plaques of pregnancy (PUPPP ... In DIF test of lesion and perilesional skin a linear band of C3 deposits and IgG along the basement membrane noted.