Overview SGB in Management of Patients With PDPH Using TCD Status: Completed Trial end date: 2020-09-20 Target enrollment: Participant gender: Summary This study aims to investigate the ability of SPGB in the management of PDPH. Transcranial Doppler is also used as an measure to assess the block success by detecting the variability in the cerebral hemodynamics before and after the block. Phase: N/A Details Lead Sponsor: Zagazig UniversityTreatments: Lidocaine