What is the effective treatment for Huntington's disease?

Tetrabenazine is considered an effective treatment for the movement disorders associated with Huntington's disease, specifically for managing dyskinesia. Huntington's disease is characterized by chorea, which is a type of involuntary movement. Tetrabenazine works by decreasing the levels of dopamine in the brain, which helps to reduce these abnormal movements. It is particularly useful in addressing symptoms and improving the quality of life for patients suffering from this progressive neurological condition.

The other options do not represent effective treatments for Huntington's disease in the context of its movement symptoms. There is currently no cure for Huntington's disease, and while other medications may be used to manage psychiatric symptoms or support care, they do not target the dyskinetic movements as specifically as tetrabenazine does.