I have been diagnosed with New Daily Persistent Headache recently. I have had a lot of migraneous features along with typically an 8 out of 10 headache for over 1 year. I recently had the inpatient DHE treatment which luckily did work. It has been just over 1 day from the treatment, and my body feels really beat up. What I was wondering is after the DHE treatment for NDPH does it cause any type of hangover? I know that I do not have a headache now, but I feel like I am just on the verge of getting one. Is this just my body not being used to not having a headache or is this something like a post migraine withdrawal?