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Headache - Introduction
Definition:A headache is a painful sensation in the muscles, the skin, or one of the organs in the head or near the brain. The medical term for headache is cephalalgia. All headaches may be divided into two subcategories - primary headaches and secondary headaches. Primary headaches are not associated with other diseases. Examples of primary headaches are migraine headaches, tension headaches, and cluster headaches. Secondary headaches are associated with other diseases and some type of secondary headaches are caused due to other diseases. Primary Headaches and Their Types - Migraine, Tension and ClusterA tension headache is caused by the tightening of muscles in the neck or head. Tension headaches are probably the most common form of the disorder. A migraine headache occurs when blood vessels in the brain dilate (swell up). Migraine headaches are less common. Cluster headaches are characterized by very severe pain. Cluster headaches are fairly rare.
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