Answer:
Focal dystonias are involuntary movements in a single body part, which commonly includes blepharospasm (upper facial), spasmodic torticollis (cervical), and writer's cramp.
First answer by Gale Ency of Neuro Dis. Last edit by Gale Ency of Neuro Dis. Contributor trust: 14 [recommend contributor recommended]. Question popularity: 1 [recommend question].