亨廷顿舞蹈病性痴呆

定义

亨廷顿舞蹈病性痴呆是广泛脑退化的一部分，由HTT基因三核苷酸重复扩展所致，为常染色体显性遗传。起病隐袭，常见于三四十岁者，缓慢进展。起始症状常包括执行功能损害，而少见记忆损害，随后出现亨廷顿病特征性的运动损害（运动迟缓和舞蹈病）。

Dementia due to Huntington disease occurs as part of a widespread degeneration of the brain due to a trinucleotide repeat expansion in the HTT gene, which is transmitted through autosomal dominance. Onset of symptoms is insidious typically in the third and fourth decade of life with gradual and slow progression. Initial symptoms typically include impairments in executive functions with relative sparing of memory, prior to the onset of motor deficits (bradykinesia and chorea) characteristic of Huntington disease.

包含词 该编码包含的临床情况，通常不作为独立编码

• 亨廷顿舞蹈病性痴呆

索引词 可用于检索该条目的同义词与别名

• 亨廷顿舞蹈病性痴呆
• 亨廷顿舞蹈病性痴呆 [possible translation]
• 亨廷顿舞蹈病性痴呆

编码备注 Coding note

这些分类不可用作主要编码。当需要标识分类于他处的疾病引起的痴呆时，可将这些编码作为补充或附加编码。 对于多种病因引起的痴呆，对所有适用的病因进行编码。

This category should never be used in primary tabulation. The codes are provided for use as supplementary or additional codes when it is desired to identify the presence of dementia in diseases classified elsewhere. When dementia is due to multiple aetiologies, code all that apply.