Rimegepant is a medicine being tested to see if it can help prevent migraines in kids and teens aged 6 to 17. A migraine is a kind of headache that can make you feel really bad, sometimes with a feeling called aura, like seeing flashing lights. In this study, some kids will get rimegepant, while others will get a placebo, a pill with no medicine, to see how well it works.

To join, kids must have had migraines for at least 6 months and not too many headaches each month. They should be able to tell the difference between a migraine and other headaches. If they're already taking medicine to stop migraines, that's okay too, as long as it's been the same dose for 3 months.

Kids can't join if they have certain types of headaches, like cluster headaches, or if they've had serious head injuries or certain mental health issues. They also can't join if they have a history of drug abuse.

• Study is for children and teens aged 6 to 17.
• Participants may continue current migraine medicine if stable.
• Cannot have serious head injury or certain mental health issues.