ICD-11 definition : Huntington disease (HD) is a rare neurodegenerative disorder of the central nervous
system. HD is an autosomal dominant disorder due to a t-mutation resulting in an increased
number of triplicate cytosine-adenine-guanine repeats on chromosome 4. The manifestations
include chorea, dementia and personality changes. In the Westphal variant dystonia
and parkinsonism are prominent. Neuroimaging revels caudate atrophy. A genetic test
is available and may facilitate presymptomatic detection.;
Huntington disease (HD) is a rare neurodegenerative disorder of the central nervous
system. HD is an autosomal dominant disorder due to a t-mutation resulting in an increased
number of triplicate cytosine-adenine-guanine repeats on chromosome 4. The manifestations
include chorea, dementia and personality changes. In the Westphal variant dystonia
and parkinsonism are prominent. Neuroimaging revels caudate atrophy. A genetic test
is available and may facilitate presymptomatic detection.