The authors report the successful treatment of post-dural puncture hea
dache consequent to a cervical dural puncture, with a lumbar extradura
l blood patch. The increase in intracranial pressure generated by the
injection of autologous blood in the extradural space seems to be the
likely mechanism for the prompt relief of post-dural puncture headache
. We conclude that extradural injection of autologous blood at the sam
e level of the dural puncture may not be necessary.