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Extrapyramidal symptoms (EPS) are a variety of symptoms that occur as a result of malfunctioning of the extrapyramidal system due to neurological disorder or the side effects of drugs. As this part of the brain functions in the control of movement the symptoms occur either because of too much movement or too little and are associated with movement disorders. The symptoms include:-
- Involuntary movements
- Muscle contractions
- Muscle rigidity
- Oculogyric crisis - Involuntary movement of the eye
- Shuffling gait
These are the neurological side effect of antipsychotic medication, the major tranquilizers (eg.haloperidol, chlorpromazine, thioridazineetc ). These are used to control psychoses such as schizophrenia but can also be used to treat the [[behavioral disturbances] associated with Alzheimer's disease.