Sometimes convulsions are a legacy of a birth injury to the brain, sometimes they point to an acute infection of the brain, but the commonest cause between the age of 6 months and 1 year is latent tetany.

• 有时惊厥是由于婴儿出生时脑外伤的遗患，有时说明大脑的急性感染，在六个月到一岁之间婴儿发生惊厥最常见的原因是潜伏性搐搦症。