Did anyone have issues with headaches immediately post-op? I'm four days out and have a killer headache today. Other than dehydration, what has caused this for anyone?

I did from caffeine and sugar withdrawal. Also, when I was borderline dehydrated I got headaches as well. Feel better!

Yes! I think it can be combination of what jme said above and anaesthetics.

Ok, so this might sound crazy, but I was having terrible headaches from caffiene withdrawl and I found a strange suggestion that worked. There is a yoga breathing technique where you plug your right nostril and breathe in and out deeply through your left nostril for 5 minutes. Crazily enough, it works. There is all sorts of stuff about it on the internet. May want to give it a whirl. Good luck!

the headaches can be caused from the pain meds too. the pain meds they give us can cause a thing called rebound headache. I got that a lot when i was on them. hope you feel better

I think I've narrowed it down to the Zofran. I've been taking it every 6 hours as prescribed, and headaches are one of the common side effects. I didn't start getting the headaches until they started me on orally dissolving Zofran, rather than the IV Zofran. I'm gonna try the breathing trick, though!

Lol! Good!

I have headaches none stop since surg on April 10th. Sometimes I just wake up with a headache. I am assuming it is lack of fluids.

Hope you feel better, that doesn't sound fun.