一、维生素不足的原因: 1.消耗过多:高热、低温、中毒及慢性消耗性疾病都能导致维生素损失。患传染病的小儿常因某些临床症状如狂躁,谵语,痉挛,缺氧等增加维生素消耗。2.摄入不足:某些传染病(如痢疾,伤寒,黄疸型肝炎等)出现厌食,呕吐,腹泻等症状和服用某些泻剂、硷性药,以及长期患脑器质性疾病的昏迷病人,均可致维生素缺乏或影响脂溶性维生素的吸收。 First, the reasons for vitamin deficiency: 1. Excessive consumption: high fever, low temperature, poisoning and chronic wasting disease can lead to vitamin loss. Children suffering from infectious diseases often due to some clinical symptoms such as manic, bravery, spasms, hypoxia, increase vitamin consumption. Inadequate intake of some infectious diseases (such as dysentery, typhoid fever, jaundice hepatitis, etc.) appear anorexia, vomiting, diarrhea and other symptoms and taking some laxatives, alkaline drugs, and long-term brain organic disease coma Patients, can cause vitamin deficiency or affect the absorption of fat-soluble vitamins.