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Target lesion in dermatology is the typical lesion of erythema multiforme (EM) in which a vesicle is surrounded by an often hemorrhagic maculopapule; EM is often self-limited, of acute onset, resolves in three to six weeks, and has a cyclical pattern; EM lesions are 'multiform' and include macules, papules, vesicles, bullae. Etiology Idiopathic or follow infections, drug therapy or occur in immunocompromised hosts ==Morphology== Target lesion consists of three zones : # Dark centre of small papule, vesicle, or bulla (iris) # Pale intermediate zone # Peripheral rim of erythema 抄文引用元・出典: フリー百科事典『 ウィキペディア（Wikipedia）』 ■ウィキペディアで「Target lesion」の詳細全文を読む スポンサード リンク
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