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.
1 Classic migraines, which start with a warning sign or aura and can be quite painful, can last a day or two.  Common migraines, those that do not have auras first, can last three or four days. With this type of migraine, the pain in your head may be only on one side.