Hi Rich17,
First let me apologize for not getting to you sooner - I'm so very sorry. Now let's see what I can do to help you out.
It sounds like you have a lot going on, and it's always good to try and get to the bottom of things. Unfortunately this can often take longer than we'd like, many of us aren't accurately diagnosed for years. Now for some good news. Let's talk about your C PAP. How long have you been using it? Do you use it every night as suggested by your doctor? I'm sorry about all the questions, but having all the information will point me in the right direction to help you. If your CPAP is not worn every night, you won't get all the intended benefits from it. If fit is a problem, many advances have been make to these devices. They even make ones for side sleepers! Have you noticed any correlation between sleeping habits and these migraines? That would be the first thing I would investigate.
The thing about medications is it can take up to 90 days at the right dose before we see a reduction in our migraine frequency and severity when we start new medication. During this time potential side effects may lessen as our body adjusts to the new medication. If we don't give each medication a fair trial, we'll never know if it would have been the one medication that would have worked. Does that make sense?
I wish I could tell you exactly what type of migraine you are having but only a qualified doctor can do this. An accurate diagnosis can be achieved after you have a complete neurological exam, discuss your symptoms and you and your family's medical history with the doctor. You mentioned you've been to a number of neurologists, but have these doctors been board certified in headache medicine? It may be time to seek out the expertise of one of these doctors. It's not that neurologists aren't good doctors, but it's hard for them to be experts in one area because they treat so many different conditions like multiple sclerosis, stroke, epilepsy, Parkinson's and others. Migraine/headache experts are just that, experts in one area - migraine and headache disorders. Here is information on what makes these doctors so special and how to find one; https://migraine.com/blog/how-are-migraine-specialists-different/ and https://migraine.com/blog/looking-for-a-migraine-specialist/. It IS a hassle seeing yet another doctor, but will be worth it to get your life back.
You mentioned rebound? If you take something every day or nearly every day to help relieve your pain it could be part of the problem. Taking migraine medications like Imitrex, Maxalt and others and/or pain relievers, whether they are over-the-counter or prescription, more than two to three days a week may create medication overuse headache, moh which was formerly called rebound. If we are in an moh cycle our migraines will be more difficult to treat and we can end up in a daily cycle of pain that is hard to break. When you get a chance take a look at this information; https://migraine.com/blog/help-how-can-i-not-overuse-migraine-medications/.
How does that sound? Let me know what you think.
Nancy