Make a note somewhere that if you've had any kind of neck/head concussion or injury to check out a NUCCA certified chiropractor. They are specialists in neck injuries, base of skull, atlas/axis issues. You may not even know you have an issue that's severe enough to be causing some of your symptoms, I didn't. I'veseen a regular chiropractor for welll over a decade and had several recent CT scans/MRIs, of my head/neck, and they are all fine per mainstream medical. I'm seeing a NUCCA DR now and after just one appt (including 3 xrays and a very small adjustment, followed by 2 more xrays to confirm the adjustment worked) I'm feeling better already. My atlas bone was really twisted out of position, putting pressure on nerves, blocking arteries/veins, and causing potential CSF drainage issues. I'll need repeat treatments for a few weeks to get the tendons, muscles, etc to hold the "new" proper position but I'm hoping that that alone will cure my iiH, which will stop the CSF leak and brain fog and with the nerve and leak issues gone my MCAS will get better too!. Maybe after 7 years things will finally get better.