Write-up: Information has been received from a physician concerning a female (age not reported) who on approximately 30-AUG-2007 "6 weeks ago" was vaccinated with Zostavax (Oka/Merck). On approximately 05-OCT-2007 "one week ago", the patient experienced pain in the buttocks to weakness to the lower extremities. The physician believes the patient may have Guillain-Barre Syndrome. The patient''s experience caused hospitalization. At the time of the report, the patient remained hospitalized. Additional information has been requested.