Hi Karilann,
About my headaches:
I have had headaches upon waking a few times a week. It started in 1994. It goes away after a few hours with caffeine and Aspirin.

Then I can get a migraine that last a few days. That I need a dark room and to lay down for. This is only about twice a year.

Then I get sinus headaches with a cold, like now it lasted 4 days. Nose runs and is bloody way up high in the sinus area. ENT doc did a CT of sinuses and a MRI of the head (not looking for my lesions, just structure) a few years ago.

Normal at the time of course, said I had a deviated septum that's all. Many people have that. My sinuses are my weak spot. Cold weather aggravates them, not hot weather.

My head also gets the pain like Dej and Karilann described. That I believe is the MS headache vs. the other crapola ones. These get worse with relapse, but can be there when they feel like it. I haven't found anything for them.

IVSM if I relapse helps, so maybe inflammation?

If not in a relapse, I normally get this pressure as a fullness all over, tight scalp, vise-like in my whole head and it hurts just to move a few hairs on my head. Back of head hurts at ear level. Perhaps muscle spasms?, I don't know just guessing.

I do believe headaches are common with MS people, some like normal people get, and ones that are related to our MS are different. JMO