Headache

A headache is a condition of mild to severe pain in the head; sometimes upper back or neck pain may also be interpreted as a headache.

Headaches have a wide variety of causes, ranging from eyestrain to inflammation of the sinus cavities to life-threatening conditions such as encephalitis. When the headache occurs in conjunction with a head injury the cause is usually quite evident; however, many causes of headaches are more elusive. The most common type of headache is a tension headache.

See Also:
Tension headache
Migraine headache
Cluster headache
Rebound headache

This article is licensed under the GNU Free Documentation License. It uses material from the Wikipedia article "Headache" and from Pain Busters Clinic

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