Changes

A '''headache''' is an ache originating in the [[Frontal lobe]]s of the [[brain]].  Headaches may be caused by many things, including [[stress]], [[noise]], and cranial pressure.

A '''headache''' is an ache originating in the [[Frontal lobe]]s of the [[brain]].  Headaches may be caused by many things, including [[stress]], [[noise]], and cranial pressure. They can also be caused by both hypertension and hypotension.

*Scientists have yet to completely unravel the cause or causes of headaches. It was once believed that constriction and dilation of blood vessels caused migraine headache, while muscle contraction caused tension headache. The constriction of vessels in the head was thought to cause the aura of migraine, as well as the nausea and vomiting. The subsequent relaxing, or dilation, of the vessels then brought on the pounding pain associated with migraine. [http://www.healthsquare.com/headaches4.htm]

*Scientists have yet to completely unravel the cause or causes of headaches. It was once believed that constriction and dilation of blood vessels caused migraine headache, while muscle contraction caused tension headache. The constriction of vessels in the head was thought to cause the aura of migraine, as well as the nausea and vomiting. The subsequent relaxing, or dilation, of the vessels then brought on the pounding pain associated with migraine. [http://www.healthsquare.com/headaches4.htm]