Abnormal movements (also called "movement disorders" or "extrapyramidal disorders") are a group of neurological diseases characterized by involuntary or uncontrollable movements. The movements may be rhythmic or irregular, fast or slow, and are sometimes associated with abnormal posture, a difficulty coordinating gestures or walking problems. For example, Parkinson's disease, tremors, dystonia, chorea, and tics are part of this group. They are often due to a dysfunction of or a lesion on the basal ganglia or the cerebellum. A wide range of therapies is available to treat these symptoms: oral medications, intramuscular injections, and neurosurgical interventions.
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