title: Successful Treatment of Brachial Plexopathy Due to Herpes Zoster Infection With Intravenous Immunoglobulin.
abstract: OBJECTIVE
  The aim of this study was to report the case of a male patient with Parkinson disease who developed brachial plexopathy (BP) due to varicella-zoster virus, which was successfully treated with human immunoglobulin.
  
  
  METHODS
  We report the case of a 75-year-old male subject with a diagnosis of Parkinson disease who came to our hospital complaining of pain, skin lesions, and strength loss in his right arm during the past 2 months. Physical examination revealed vesicular rash compatible with varicella-zoster virus lesions. Nerve conduction studies and magnetic resonance imaging of the brachial plexus showed inflammatory changes at that level. A trial with oral valacyclovir followed by intravenous methylprednisolone bolus was administered without further response. However, human intravenous immunoglobulin resulted in complete recovery of the symptoms.
  
  
  CONCLUSIONS
  Human immunoglobulin is effective in BP due to zoster infection and must be considered if standard treatment fails. To the best of our knowledge, this is the first report of BP associated to zoster infection successfully treated with intravenous immunoglobulin.
authors.affiliation: Movement Disorders and Neurodegenerative Diseases Unit, Hospital Civil de Guadalajara, "Fray Antonio Alcalde," Guadalajara, Mexico.
authors.forename: Michel
authors.initials: M
authors.lastname: Sáenz-Farret
authors.forename: Valeria
authors.initials: V
authors.lastname: Sandoval-Rodríguez
authors.forename: Claudia Esther
authors.initials: CE
authors.lastname: Paz-Navarro
authors.forename: Carlos
authors.initials: C
authors.lastname: Zúñiga-Ramírez
mesh_terms: D000368:Aged; D020516:Brachial Plexus Neuropathies / Q000000981:diagnostic imaging / Q000188:drug therapy* / Q000209:etiology* / Q000821:virology; D020804:Encephalitis, Varicella Zoster / Q000150:complications* / Q000000981:diagnostic imaging; D006801:Humans; D016756:Immunoglobulins, Intravenous / Q000627:therapeutic use*; D008279:Magnetic Resonance Imaging; D008297:Male; D009431:Neural Conduction / Q000187:drug effects; D010300:Parkinson Disease / Q000150:complications
chemical_list: D016756:Immunoglobulins, Intravenous