<prompt> All of the following are the true for post lumbar puncture headache exceptPresents 12 hours after procedurePain is relieved in standing positionPain is worsened by headshakingPain is occipito-frontal in location  <response>: Ans. B Pain is relieved in standing positionRef: Evidence-Based obstetric Anesthesia p75Post-dural-puncture headache PDPH or post-lum- bar-punture headache occurs 12-24 hours after dural puncture.It presents with headache occipito frontal and nausea that typically worsens when the patient assumes upright position.Incidence is higher in younger patients. 