Headaches may be primary, in which case they are due to problems with the structures sensitive to pain in the head. Or they may be secondary in which case the pain is due to an underlying disease that causes the pain-sensitive structures in the head to be activated.

For more on this, please click on the link http://www.health.harvard.edu/healthbeat/troubleshooting-constant-headaches

Have a good night, y’all 😀