I had one done and didn't follow the doctors orders to lie down after the procedure and moved around too soon. I ended up with a horrible headache for 3 days. No patch though because we were on vacation in Florida. So Tylenol, caffeine drinks and laying down alot got me through the 3 day headache. It was worth it though because they got to see things they couldn't see on the x ray and MRI and found out what the problem was.