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Department of Neurology, Hahnemann University, Philadelphia, Pennsylvania.
A patient with progressive neurological deterioration characterized by cognitive impairment, myoclonus, Parkinson’s syndrome, an abnormal electroencephalogram and fasciculations was considered for brain biopsy for suspected Creutzfeldt-Jakob disease. Complete clinical recovery followed discontinuation of lithium and nortriptyline. Awareness of this unusual drug-induced Creutzfeldt-Jakob like syndrome can avoid costly, invasive and unnecessary investigative procedures.