患者男 ,66岁 ,1998年 5月下旬无明显诱因出现全身皮肤搔痒 ,到多家医院就诊为“脂溢性皮炎”或“过敏性皮炎”。治疗后未见好转。且全身皮肤搔痒加重 ,颈面部皮肤色素沉着明显 ,呈黑紫色。 1998年 8月初出现吞咽困难 ,食物返流 ,呛咳 ,四肢无力。行肌活检病理诊为“皮肌炎”。 Patient male, 66 years old, there was no obvious incentive to systemic skin itching in late May 1998, to a number of hospitals for “seborrheic dermatitis” or “atopic dermatitis.” No improvement after treatment. And the whole body itchy skin aggravate, neck skin hyperpigmentation was black and purple. Early August 1998 swallowing difficulties, food reflux, cough, weakness. Line of muscle biopsy diagnosis as “dermatomyositis.”