Postdural puncture headache (PDPH) is a frequent complication after neuraxial anaesthesia due to accidental puncture of the dura mater. After spinal anaesthesia, the rate of PDPH may reach up to 28,7% of cases. PDPH is more common in females, especially obstetric patients, young age and more after epidural than spinal anaesthesia because of needle type. PDPH interferes with the patient's ability to resume activities, prolongs the hospital stay, and causes chronic headaches in up to 28% of cases.

Several treatment modalities were described for PDPH. Conservative treatment, an epidural blood patch, peripheral nerve blocks, such as sphenopalatine ganglion block (SPGB) and more excellent occipital nerve block (GONB) using local anaesthetic block or through percutaneous radiofrequency ablation or direct injection of local anaesthetic and steroid directly into the neck muscles; were all proven effective in treating PDPH. Radiofrequency (RF) is a commonly used technique to treat different types of pain, headaches, and musculoskeletal abnormalities. The second-generation non-invasive RF modality was recently developed as Tecar therapy (TECAR: Capacitive and Resistive Energy Transfer). Tecar therapy provided promising results in treating chronic pelvic and postpartum perineal pain. To our knowledge, Tecar therapy efficacy in treating PDPH has not been evaluated before. This study aims to assess the effectiveness of Tecar therapy as a non-invasive technique for treating PDPH. This study hypothesizes that Tecar therapy could be an effective non-invasive technique for treating or reducing PDPH.

Inclusion Criteria:

• female patients aged over 18 years
• ASA physical status I or II.
• scheduled for elective cesarean delivery under spinal anaesthesia
• who developed PDPH with failed conservative treatment

Exclusion Criteria:

• Patients with a history of long-standing diabetes.
• peripheral vascular diseases
• cervical spine disorders
• receiving analgesics and anticonvulsant medication .