Its not uncommon these days for teens to have migraines. Twenty years ago it would be strange, but not today. Teens are under more stress now. There's even an a helpful article about teen migraines on WedMD:Gracie, I wouldn't give medical advice if I didn't know what I was talking about. Becca is 15.. It is NOT normal for a teenager to have migraines, nor constant headaches..
https://www.webmd.com/migraines-headaches/news/20020619/help-for-teen-migraines#1