3例患者均为男性,2例油漆生产工人,1例热处理工,年龄26～41岁,平均年龄33岁,铅作业最长20年,最短3年。 慢性铅中毒急性发作的临床表现主要是消化系统症状。其特点是开始为脐周(2例)或下腹部(1例)隐痛,便秘,1～3天后突然发生绞痛,呈阵发性,绞痛时面色苍白,出冷汗,身体卷曲,精神萎靡,烦躁不安,不能直立,手压腹部疼痛减轻,常伴有恶心、呕吐、腹胀。体查时腹部平坦,无明显压痛 All 3 patients were male, 2 were paint-producing workers, 1 was heat-treated, aged from 26 to 41 years, with an average age of 33 years and a lead job of up to 20 years with a minimum of 3 years. The clinical manifestations of acute episodes of chronic lead poisoning are mainly digestive symptoms. It is characterized by pain or constipation beginning in the umbilical cord (2 cases) or in the lower abdomen (case 1). Sudden colic and paroxysm are seen after 1 to 3 days. Pale, colicky, cold and sweaty, curly and apathetic , Irritability, can not stand up, relieve hand pressure abdominal pain, often accompanied by nausea, vomiting, bloating. Physical examination abdomen flat, no significant tenderness