 Pruritic eczematous, papular, or urticaria-like skin lesions may also persist for weeks to months.The bullous stage of BP shows vesicles and bulla, appearing on apparently normal or erythematous skin, predominantly at the flexural aspects of the extremities and the lower trunk.Mucosal lesions, which typically are erosions of the oral mucosa, are present in 10 to 30 percent of patients.