Inclusion Criteria:  Patient acceptance. Age 21- 40 years old. Post-partum females suffering PDPH with visual analogue score (VAS) ≥ 4 and modified Lybecker classification score ≥ 2 ASA II (due to pregnancy). Body mass index < 35Kg/m2 Accepted mental state of the patient.  Exclusion Criteria:  Emergent cesarean section. Hypertensive disorders of the pregnancy. History of allergy to local anesthetics. History of chronic headache, migraine, convulsions, and cerebrovascular accident. Contraindication to spinal anesthesia: coagulopathy, infection at site of injection. Inadequate temporal window