A headache can occur in several ways. They might be as minor as uncomfortable or as severe as incapacitating.
Just remember that headaches should always be treated by a physician if they occur more than once a week or if they are accompanied by other warning signs like poor nutrition, sleep deprivation, or lack of sleep.
There are two types of headaches: acute and recurrent, and chronic and persistent, with throbbing, pulsing, scorching, or confusing headache pain.
Full Story Source: Doing this can give relief in headaches without medication