Stress, certain foods, food additives, and hormones can initiate headaches.

Is your pain in the head a pain in the neck? Stress, certain foods, food additives, and hormones can initiate headaches.
Researchers have classified many different types of headaches that include sinus headaches, exertion headaches, fever headaches, menstrual headaches, and bilious headaches. To simplify let’s examine the three major categories of headaches.

Tension or muscle contraction headaches [...]