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.
Retinal Migraines. Sometimes described as an ocular or eye migraine, retinal migraines usually last for approximately an hour and are followed by the complete return of normal vision. This type of migraine can occur with or without a headache, and may be experienced only once in a lifetime or at regular intervals.