维生素B_1缺乏症近年来报告较少。我院自1976年以来先后发现9例,现报告如下。临床资料:男4例,女5例。7例发病年龄在3～7月,1例3(1/2)岁,1例10岁。发病季节多数在5～6月。婴儿均为母乳加米糊喂养。发病时表现为烦躁5例,表情淡漠、抽搐各7例,吃奶呛咳3例,睑下垂3例,颈或四肢无力,膝反射减退各5例,两眼凝视5 Vitamin B_1 deficiency has been reported less in recent years. Our hospital has found 9 cases since 1976, the report is as follows. Clinical data: 4 males and 5 females. Seven cases of onset in the 3 to 7 months, 1 case of 3 (1/2) years old, 1 case of 10 years of age. Most of the onset season in May to June. Babies are breast milk plus rice noodles feeding. The onset of irritability in 5 cases, apathetic, convulsions in each of 7 cases, 3 cases of choking cough in feeding, 3 cases of ptosis, weakness of the neck or limbs, knee reflex in 5 cases, both eyes stare 5