This excerpt taken from the TPTX 8-K filed Oct 22, 2007.
About Acute Migraine Headaches
Migraine is a debilitating neurological condition characterized by an intense and disabling episodic headache. According to the National Headache Foundation, an estimated 30 million people in the U.S. suffer from migraines. More than 50 percent of migraine sufferers endure from one to four migraine attacks per month. In addition to headache pain, migraine attacks are frequently accompanied by photophobia, phonophobia, nausea, and vomiting. Although once thought to be primarily caused by vascular changes in the brain, some researchers now consider migraine a neurological disorder.