What factors can trigger headaches?
Common triggers of tension headaches include certain foods or beverages, hormonal changes, stress, sleep disturbances and muscle tension. Cluster headaches may be triggered by the part of the brain that regulates the body's biological clock. Secondary headaches can be triggered by an underlying condition that is mild, such as an allergic reaction or sinusitis, or serious, such as hypertension or a head injury.
Author: Nikki Wallis
First answered: 17 Oct 2014
Last reviewed: 19 May 2018
Rating: 4.7/5 Votes: 1229