I am two weeks post cervical epidural steroid injection, and have had a severe intractable headache, nausea, fatigue and photophobia since the day after the procedure (1/21/16). My doctors are stumped. MRI showed no evidence of a CSF leak, even though my symptoms are those of a classic spinal headache. Is there a possibility that I do have a CSF leak that is not showing on the MRI? Are these just rare side effects of the steroid (I don't know which one was used)? I am so frustrated and just want to feel well again. Anyone else suffered this after an ESI? Thank you so much for any insights!