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.
Vision loss can be a complication of retinal migraines. Headache that lasts from four to 72 hours. The headache tends to: 1  Affect one side of your head. 2  Feel moderately or very painful. 3  Pulsate in intensity.4  Feel worse when you're physically active.ision loss can be a complication of retinal migraines. Headache that lasts from four to 72 hours. The headache tends to: 1  Affect one side of your head. 2  Feel moderately or very painful. 3  Pulsate in intensity.