<unk> s are movement disorders in which sustained muscle contractions cause twisting and repetitive movements or abnormal postures. The movements, which are involuntary and sometimes painful, may affect a single muscle; a group of muscles such as those in the arms, legs, or neck; or the entire body. Those with<unk>  usually have normal intelligence and no associated psychiatric disorders.
Dystonia
Dysphonia
Chorea
Aphonia
Myoclonus
Hypotonia
Dysarthria
Pseudoathetosis