患者男，４５岁。１月前自觉头痛、疲乏、上腹部疼痛，自服胃乐新等药可缓解。但停药后又复发。近日上腹部疼痛加重并皮肤出现明显红紫、瘙痒，遂来就诊。体检：ＢＰ２２／１３ｋＰａ，皮肤粘膜红紫，以面颊、舌、四肢末端较明显，压之退包。睑结膜显著充血。心肺检查无异常。 Male patient, 45 years old. A month ago, conscious headache, fatigue, upper abdominal pain, self-service stomach and other new drugs can be relieved. However, relapse after stopping. Recently abdominal pain and skin accentuations significantly purple, itching, then came to the clinic. Physical examination: BP22 / 13kPa, skin mucosa red purple to the cheeks, tongue, extremities more obvious, the pressure of the backpack. Membrane conjunctiva significant congestion. No abnormal heart and lung examination.