• Chorea (brief, irregular movements): Chorea is typically seen first in the fingers, hands, and face muscles, and progresses to include all four limbs and the trunk.
• Dystonia (abnormal, sustained positioning of a part of the body): The most common types of dystonia are twisting of the arm with hand clenching, excessive bending of the knee, and twisting of the foot.

Copied verbatim from https://hdsa.org/what-is-hd/motor-physical-symptoms/