Neurocysticercosis: a new differential in the diagnosis of postdural puncture headache.

Positional headache after spinal anesthesia is considered pathognomonic for postdural puncture headache. This report describes a patient who developed a positional headache after spinal anesthesia that was due to neurocysticercosis, a parasitic central nervous system infestation caused by the tapeworm Taenia solium.