Perhaps the most common neurological conditions of all are headaches. They come in various intensities, lengths and locations. In any given year, most Americans have at least one headache and most treat them with nonprescription pain relievers.
Migraines often start early in life and can stop by middle age.
They can cause severe pain and disable a person for hours or even days. Most migraines are occasional, rarely daily. Changes in concentrations of these chemicals may cause blood vessels to change size, bringing on the migraine. The most common headaches are tension headaches. They can be infrequent or chronic, occurring almost daily.