title: CSF and MRI findings in patients with acute herpes zoster.
abstract: OBJECTIVE
  To explore MRI and CSF findings in patients with herpes zoster (HZ) and to correlate the findings with clinical manifestations of the disease.
  
  
  METHODS
  Fifty immunocompetent patients (mean age, 59 years; range, 17 to 84 years) with HZ of fewer than 18 days duration participated. None had clinical signs of meningeal irritation, encephalitis, or myelitis. In 42 patients (84%), the symptoms constituted pain and rash only. Six patients (12%) had motor paresis, and three patients (6%) had ocular complications. One to three CSF samples were obtained from 46 patients (the first sampling taken 1 to 18 days from onset of rash), and 16 patients (all with either trigeminal or cervical HZ) underwent MRI of the brain. The clinical follow-up continued at least 3 months.
  
  
  RESULTS
  CSF was abnormal in 28/46 patients (61%): pleocytosis (range, 5 to 1,440 microL) was detected in 21, elevated protein concentration in 12, varicella zoster virus (VZV) DNA in 10, and immunoglobulin G antibody to VZV in 10. These changes were more common in patients with acute complications, although they did not predict development of postherpetic neuralgia (PHN). In 9/16 patients (56%), MRI lesions attributable to HZ were seen in the brainstem and cervical cord. At 3 months, 5/9 patients (56%) with abnormal MRI had PHN, whereas none of the 7 patients with no HZ-related lesions on MRI had any remaining pain.
  
  
  CONCLUSIONS
  Subclinical extension of viral inflammation into the CNS occurs commonly in HZ. This finding may have implications for treatment of HZ and prevention of various associated complications.
authors.affiliation: Department of Neurology, Tampere University Hospital, Finland.
authors.forename: M
authors.initials: M
authors.lastname: Haanpää
authors.forename: P
authors.initials: P
authors.lastname: Dastidar
authors.forename: A
authors.initials: A
authors.lastname: Weinberg
authors.forename: M
authors.initials: M
authors.lastname: Levin
authors.forename: A
authors.initials: A
authors.lastname: Miettinen
authors.forename: A
authors.initials: A
authors.lastname: Lapinlampi
authors.forename: P
authors.initials: P
authors.lastname: Laippala
authors.forename: T
authors.initials: T
authors.lastname: Nurmikko
mesh_terms: D000208:Acute Disease; D000293:Adolescent; D000328:Adult; D000368:Aged; D000369:Aged, 80 and over; D000914:Antibodies, Viral / Q000134:cerebrospinal fluid; D001812:Blood-Brain Barrier; D001921:Brain / Q000473:pathology*; D005260:Female; D006562:Herpes Zoster / Q000134:cerebrospinal fluid* / Q000473:pathology* / Q000503:physiopathology; D014645:Herpesvirus 3, Human / Q000276:immunology; D006801:Humans; D007074:Immunoglobulin G / Q000134:cerebrospinal fluid; D008279:Magnetic Resonance Imaging; D008297:Male; D008875:Middle Aged; D004369:Pentetic Acid
chemical_list: D000914:Antibodies, Viral; D007074:Immunoglobulin G; D004369:Pentetic Acid