Is there a disability insurance company or plan out there that could cover chronic migraine?

I am considering getting disability insurance that is not tied to my job because my migraines have become so frequent and severe over the past year. It looks like most disability insurance plans are really good at paying for disabilities caused by things like cancer or injury. I am skeptical if any would pay for migraines becoming out of control. Just trying to plan for the worst and hoping I can get these migraines under control.