Lumbar axial normal image (MRI)

Acute drug-induced movement disorders

Extrapyramidal side effects are seen with all first-generation, and most second-generation, antipsychotic drugs. Acute akathisia and acute dystonic reactions are usually the first extrapyramidal side effects to develop, primarily shortly after initiation of an antipsychotic or a dose increase, and generally before parkinsonism develops. Acute dystonic reactions consistently resolve when the offending drug is stopped, but akathisia has a more complex prognosis.