I'm not sure if this helps, but I have been dx'd with fibro & migraines. I have daily headaches, I have to take some type of pain killer every day (excedrin migraine, ibuprofen, tylenol); some headaches get pretty bad. I have lived with them for many years (25+)....I used to get them to the point I would get sick, but over the years they have eased up somewhat. about
2 years ago, I started having aura's (sp)in my right eye only and I would lose total muscle control over my left arm. My primary ran every test in the book, MRI; MRA; ENG; EEG; upteen million bloodwork tests, sleep study; he sent me to 3 specialists including eye specialists.....NOTHING.....they said the aura's & arm issue was migraine related. They did find out however that I do have sleep apnea, raynauds's disease, cervical disc disease, & now fibro. My doc is sending me to a rheumatologist this month to confirm. Unfortunately, there's not much that can be done about
my headaches/migraines due to the fact that most of the medications for them make you tired, and with my sleep apnea (& narcolepsy) I can't take meds that make me tired. As far as the fibro goes, I'm on Lyrica & Sevella....neither take the pain away completely, actually I don't notice much difference yet....but I just started the Sevella and I'm hoping it will kick in sometime soon-I've been on it a month now.
On another note, my sleep apnea doc stated to me she believes my sleep disorders, migraines, & fibro go hand in hand. The only advice I can give; which I'm new to all this too so I'm still learning, but I would make sure your mother finds the right doctor to begin with. One who would not pretend to know what's wrong if he/she doesn't know, but will put your mother first to find the reasoning.....even if it means sending her to the right doctors and running whatever tests they need. Good luck, I feel for you & your mother's situation.