I was curious if anybody had any practical experience/references for the incidence of PDPH in patients getting ESIs in a chronic pain clinic vs. individuals with a needle going into the Epidural space for other anesthesic reasons...I've been told the difference in rates of PDPH in the two is equivocal and was curious why potentially lesser specialized individuals without the benefit of fluoroscopy and better spinal needles would have simliar rates versus their Pain Med cohorts. I'm curious if it's just a patient selection bias given they deal with a ton of people w/ surgerized backs/complex anatomy, the technology isn't all its cracked up to be, or if there is more to the story I'm not thinking of....I appreciate your opinions.