title: Letter: Unusual cardiac and neurological reactions to narcotics.
mesh_terms: D000328:Adult; D001921:Brain / Q000098:blood supply; D003042:Cocaine / Q000009:adverse effects*; D003711:Demyelinating Diseases; D004562:Electrocardiography; D003932:Heroin / Q000009:adverse effects*; D006556:Heroin Dependence / Q000150:complications; D006801:Humans; D007238:Infarction / Q000139:chemically induced; D008297:Male; D009020:Morphine / Q000009:adverse effects; D009187:Myelitis / Q000139:chemically induced*; D009188:Myelitis, Transverse; D009203:Myocardial Infarction / Q000139:chemically induced*; D010243:Paralysis / Q000139:chemically induced; D019966:Substance-Related Disorders / Q000150:complications
chemical_list: D003932:Heroin; D009020:Morphine; D003042:Cocaine