Below is an instruction from Human. Write a response.
    ### Instruction:
    What is (are) Migraine ?
    ### Response:
    If you suffer from migraine headaches, you're not alone. About 12 percent of the U.S. population gets them. Migraines are recurring attacks of moderate to severe pain. The pain is throbbing or pulsing, and is often on one side of the head. During migraines, people are very sensitive to light and sound.
    