early 15c., from Middle French lesion, from Latin laesionem (nominative laesio) injury, from past participle stem of laedere to strike, hurt, damage, of unknown origin. Originally with reference to any sort of hurt, whether physical or not.
Most migraines last about 4 hours, but severe ones can last up to a week. How often they happen differs for everyone, but itâs common to get two to four headaches per month. Some people may get migraines every few days, while others get them once or twice a year.
Yes, it can last months even. I've had migraine for 2+ years, now. It sucks. If advil isn't helping, then you should probably discontinue it, because it's not good for the tummy anyway, if you're using it as much as you say you are.