Chorea manifests as involuntary, often contnuous, unpredictable, and involuntary dance-like movements. Patients with chorea are often unaware that they have involuntary movements. Others may try to incorporate the movement into a semipurposeful action (parakinesia). Chorea is usually worse with mental activity or emotion. Physical activity may also exacerbate chorea. The presence of “motor impersistence” is typical of chorea. Sometimes patients can also make unintentional sounds referred to as hyperkinetic dysarthria. Chorea disappears during sleep. Ballism is considered a type of chorea with a more proximal distribution and larger movements. Athetosis is a term formally used for chorea with slow writing movements in the distal limbs, but it is not considered a specific entity of chorea anymore. The most important genetic cause of chorea in adulthood is Huntington’s disease, and genetic testing should be considered as a first step in all patients with adult-onset chorea if no secondary cause is found.
The development of PAT‐HD: A co‐designed tool to promote physical activity in people with Huntington’s disease
