Oh, yeah, the 283 mg/dl sugar count migraines ~ that’s not quite an “allergy” but insulin helps a lot. I’ve heard of folks with chronic hypoglycemia (low blood sugar) having those headaches all the time.
That would me me! A hypoglycemia headache is nasty and once I got one, eating didn’t help get rid of it. Now when I feel the energy level drop the first thing I do is get a snack. For many years I didn’t realize what was going on.