（三）维生素B<sub>1</sub>药物的需要量增加儿童生长发育速度较快，需要量也相对较多；如小儿患结核、麻疹、水痘、肺炎以及高热时，或患有如甲状腺功能亢进等代谢率增加的疾病时，维生素B<sub>1</sub>的消耗增加，如此时未予及时补充，则造成维生素B<sub>1</sub>的缺乏。
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