Pneumocephalus with headache during spinal anesthesia.
D000388:Air; D000775:Anesthesia, Spinal / Q000009:adverse effects*; D002555:Cerebrospinal Fluid; D006261:Headache / Q000209:etiology*; D006801:Humans; D008297:Male; D008875:Middle Aged; D009339:Needles; D011007:Pneumocephalus / Q000209:etiology*; D011187:Posture; D013346:Subarachnoid Space; D013396:Suction