title: Myasthenia gravis as a cause of head drop in Parkinson disease.
abstract: Head drop is characterized by marked anterior flexion of the cervical spine. As a result, the affected patient presents with the head tilted forward and the chin resting on the chest. We report a 75-year-old male patient with parkinsonism and head drop caused by isolated myasthenic weakness of the neck extensor muscles. Our case is the second report of isolated head drop as a presenting symptom of myasthenia gravis in a patient with parkinsonism.
authors.affiliation: Department of Neurology, Izmir Tepecik Educational and Research Hospital, Izmir, Turkey. fatmairem@yahoo.com
authors.forename: Irem Fatma
authors.initials: IF
authors.lastname: Uludag
authors.forename: Meltem
authors.initials: M
authors.lastname: Korucuk
authors.forename: Ufuk
authors.initials: U
authors.lastname: Sener
authors.forename: Yasar
authors.initials: Y
authors.lastname: Zorlu
mesh_terms: D000368:Aged; D002800:Cholinesterase Inhibitors / Q000627:therapeutic use; D004576:Electromyography; D006257:Head; D006801:Humans; D016756:Immunoglobulins, Intravenous / Q000627:therapeutic use; D008297:Male; D018908:Muscle Weakness / Q000188:drug therapy / Q000209:etiology* / Q000503:physiopathology*; D009157:Myasthenia Gravis / Q000150:complications* / Q000175:diagnosis / Q000276:immunology; D009334:Neck Muscles / Q000503:physiopathology*; D010300:Parkinson Disease / Q000175:diagnosis / Q000503:physiopathology*; D011729:Pyridostigmine Bromide / Q000627:therapeutic use
chemical_list: D002800:Cholinesterase Inhibitors; D016756:Immunoglobulins, Intravenous; D011729:Pyridostigmine Bromide