Idiopathic Eruptive Macular Pigmentation: Report of Five Patients

摘要: We report the occurrence of idiopathic eruptive macular pigmentation in four children and one adolescent. This condition appears to be a distinct clinicopathologic histologic entity. It is characterized by asymptomatic, pigmented macules involving neck, trunk, proximal limbs. All patients or their families denied patients' having taken any drug before eruption. In all first sign was spot without preceding erythematous, papular, hypopigmented lesions. Histologic study showed enhanced epidermal basal layer with pigmentary incontinence, mild perivascular lymphohistiocytic infiltrate, many melanophages papillary dermis. Electron microscopy an increased number melanosomes suprabasal keratinocytes as well clustered dermal melanophages. Treatment this asymptomatic unnecessary because spontaneous resolution lesions expected within several months few years.