Botox is an FDA recognized treatment for chronic migraines. It is also very effective for headaches that are caused by whiplash injuries and other motor vehicle related injuries. Botox is injected around pain fibers that are involved in headaches. Botox enters the nerve endings around where it is injected and blocks the release of chemicals involved in pain transmission. Most people experience at least a 50-60% reduction in headache related pain. The benefits last between 3-6 months and personal injury insurance covers the treatment.