患儿男,7个月,因面部及腰、腹、臀、双侧股部暗红色斑块4个月,于1999年10月4日来诊。患儿在3个月时脐左侧起一鸽卵大红色结节,有触痛,未予处理。10余日后发现腰、腹、臀部、两股及两腮相继出现大片类似皮疹,但无触痛,首发皮疹渐变平,呈暗红色。患病前后无发热畏寒,精神好,睡眠 Children male, 7 months, due to the face and waist, abdomen, buttocks, bilateral dark red patches 4 months, came to the clinic on October 4, 1999. Children at 3 months from the left umbilical egg pigeon big red nodules, tenderness, untreated. More than 10 days after the discovery of waist, abdomen, buttocks, two shares and two cheeks have appeared large similar rash, but no tenderness, the first rash gradient flat, dark red. Before and after the illness without fever chills, good spirit, sleep