“…Spontaneous intracranial hypotension (SIH) is a debilitating condition that occurs spontaneously secondary to cerebrospinal fluid (CSF) leak and/or CSF hypotension (lumbar puncture opening pressure <60 mm CSF) and typically manifests as orthostatic headache associated with nausea, vomiting, tinnitus, vertigo, hypoacusis, neck pain/stiffness, and photophobia. [ 1 , 2 ] Treatment options include bed rest, hydration, caffeine, analgesics, epidural blood patch (EBP), [ 3 , 4 ] steroids, [ 5 , 6 ] fibrin glue (N-butyl-cyanoacrylate), [ 7 , 8 ] and surgical repair. [ 9 , 10 ] In this series, we report two cases, who presented to us with features of SIH and were managed successfully with sphenopalatine ganglion (SPG) block.…”