Turner syndrome, a chromosomal abnormality in which all or part of one of the sex chromosomes is absent, manifests itself in several ways. These include characteristic physical abnormalities (most often non-functioning ovaries, which results in the absence of menstrual cycles and sterility) and various other health problems, such as congenital heart disease, low thyroid hormone levels, and autoimmune diseases.
这些儿童的身体机能都严重失常。比如特纳综合症是一种染色体异常病，其特征为其中一个性染色体出现全部或部分缺失。其征状有好几种：包括明显的身体异常（通常是卵巢功能丧失，导致月经不至和不孕不育）和先天性心脏病，甲状腺水平低下和自身免疫性疾病等其他健康问题。