[HEADACHE FOLLOWING SPINAL ANESTHESIA].
D000758:Anesthesia / Q000009:adverse effects*; D000775:Anesthesia, Spinal; D000776:Anesthesiology; D006261:Headache; D006801:Humans; D007049:Iatrogenic Disease
ANESTHESIA COMPLICATIONS; ANESTHESIA, SPINAL; HEADACHE