Down′s 综合征(唐氏综合征),目前国内泛称先天愚型或伸舌样痴呆,这是一种最常见的常染色体综合征,人群中发病率约在1/650左右。此病首次于1866年为 Down所发现,称之为 Down′s 综合征。一、体征Down′s 综合征的患儿在出生时症状并不明显,在三个月以前不易诊断。过四、五个月愚型特征逐渐突出。最明显的是身长发育不良,不大哭,也不爱动。 Down’s Syndrome (Down Syndrome), currently known as Down’s syndrome or dementia, which is one of the most common autosomal syndrome, the incidence of the crowd about 1/650 or so. The disease was first discovered by Down in 1866 as Down’s syndrome. First, the signs of Down’s syndrome in children with symptoms is not obvious at birth, not easy to diagnose three months ago. After four or five months stupid features gradually prominent. The most obvious is the growth of stunted, not crying, do not love moving.