Cluster and Tension Headaches

Cluster Headaches
Cluster headaches occur in groups, or clusters, and individual attacks last one to three hours on average. They may occur every other day—or several times a day.
The Cluster Headache: Just Like Clockwork
Cluster headaches -- called "cluster" because of their pattern of striking in groups or clusters -- hit at the same time of day for a period of weeks or months, then vanish as suddenly and as mysteriously as they appeared.
Tension Headaches
Tension headaches are typically a steady ache, rather than a throbbing one, and affect both sides of the head. Stress or muscle tension is often the cause.
Help for Tension Headaches
Almost everyone has a tension headache from time to time. These headaches aren’t caused by disease. They are so common they are considered to be “normal” headaches.