This study is testing if a drug called lasmiditan is safe and works well for kids aged 6 to 17 who have migraines. A migraine is a really bad headache that sometimes comes with seeing flashing lights or feeling sick to your stomach. The study will last up to 20 weeks and you might need to go to the doctor up to 4 times. To join, you should have had migraines for more than 6 months and have a specific number of migraines each month. You also need to be able to swallow a pill and weigh at least 15 kilograms (about 33 pounds). You can't join if you're pregnant or have serious health problems.

• The study lasts up to 20 weeks with up to 4 doctor visits.
• You must have had migraines for more than 6 months.
• You must weigh at least 15 kilograms and be able to swallow a tablet.