Cause

The cause of tension headaches is not clear. In the past, doctors believed that tension or spasms of the muscles of the neck, face, jaw, head, or scalp played a role in causing these headaches. Now they think a change in brain chemistry may also help cause a tension headache.

Tension headaches are the most common type of headache. They can be brought on—or triggered—by things such as stress, depression, hunger, and muscle strain. Tension headaches may come on suddenly or slowly.

Your headache may go away after you relax or take a pain reliever such as aspirin or ibuprofen.

Chronic tension headaches often occur along with other health problems such as anxiety or depression. Rarely, serious problems such as tumors or infections may cause a headache.

Symptoms

Symptoms of tension headaches include:

• A constant headache that does not throb or pulse. You usually feel the pain or pressure on both sides of your head.
• Tightness around your forehead that may feel like a "vise grip."
• Aching pain at your temples or the back of your head and neck.

Unlike migraines, tension headaches usually don't occur with nausea, vomiting, or feeling sensitive to both light and noise. But light or noise could make your headache worse. Tension headaches usually aren't bad enough to keep you from doing your daily activities.

Tension headaches can last from 30 minutes to 7 days.

If you have a headache on 15 or more days each month over a 3-month period, you may have chronic tension headaches.