Disorders affecting motor behavior or body movements, characterized by symptoms such as tremor, chorea, dystonia, bradykinesia, ballismus, ataxia, akathisia, and akinesia. Neurological conditions associated with movement disorders include parkinson’s disease, huntington’s disease, and hemiballismus. Movement disorders may also be the result of medication effects.
Disorders of the nervous system, muscles, joints, and bones that may impair movement. There are many different types of movement disorders: apraxia is a loss or impairment of the ability to perform purposeful movements; tremor is involuntary, rhythmic muscle movement caused by alternate contraction and relaxation of the muscles. In many cases, problems with movement are a symptom of an underlying medical problem, such as Parkinson disease, multiple sclerosis, head injury, or emotional disorders.
Hemiplegia, ataxia, monoplegia, tremors, rigors, chorea, athetosis, convulsions, spasm (clonic or tonic), reflex (hysterical, habit spasm, tics), and spastic paralysis. Movement disorders are common in the elderly (e.g., those with degenerative neurological diseases). When they occur acutely, they are often caused by a new medication or toxin, stroke, or trauma.