Spontaneous low cerebrospinal fluid pressure headache.

A 69 year old man presented with headache on arising and relieved with recumbency. His clinical presentation, laboratory data, response to treatment and radiographic evaluation were consistent with spontaneous low cerebrospinal fluid pressure from CSF hyperabsorption. Cisternography showed rapid accumulation in the kidneys and urinary bladder, without evidence of CSF leak. His headache was eventually controlled with two blood patches and oral caffeine.