There's a lucky few that have never had one.
Headaches can be mild, tension caused, or the migraine, the most painful.
There are cluster headaches, which is when you have one headache after another. They can occur daily for weeks at a time. The majority of headaches are caused by muscle contractions. It takes over your whole head with a dull ache and tightness. Migraines are usually on one side of the head.