title: Acute subdural hematoma following spinal cerebrospinal fluid drainage in a patient with freezing of gait.
abstract: BACKGROUND
  Headache is a common complication of lumbar puncture (LP). Although in most cases post-LP headaches are not severe and have a benign course, they can also be a manifestation of a potentially life-threatening complication such as subdural hematoma (SDH).
  
  
  METHODS
  We describe a patient in whom a massive SDH developed after LP and cerebrospinal fluid (CSF) drainage, which were performed during the diagnostic evaluation of freezing of gait.
  
  
  CONCLUSIONS
  SDH should not be excluded from the differential diagnosis of headache following LP, especially when there is a loss of CSF.
authors: Department of Neurology and Movement Disorder Center, CRC, Seoul National University Hospital, Seoul, Korea.
authors: Han-Joon
authors: HJ
authors: Kim
authors: Yong-Jin
authors: YJ
authors: Cho
authors: Joong-Yang
authors: JY
authors: Cho
authors: Dong-Ha
authors: DH
authors: Lee
authors: Keun-Sik
authors: KS
authors: Hong