To compare between oral prednisolone and oral pregabalin in reducing severity post-dural puncture headache after spinal anesthesia in patients undergoing lower limb surgeries.~To calculate total amount of postoperative analgesic requirement for 72 hours after the onset of the headache in all patient groups.~To detect any side effects of the study medications in all patient groups.
The aim of this study is to compare between oral prednisolone and oral pregabalin in management of PDPH to detect effectiveness of the treatment in reducing severity of PDPH, total rescue analgesic consumption and adverse effects of prednisolone and pregabalin in patients undergoing lower limb surgery.