Headache Prevention Institute [IA][Direct] -
Dedicated solely to the diagnosis and prevention of a neuromuscular disorder known as spindular dysfunction.
National Headache Foundation [IA][Direct] -
Volunteer, non-profit group established by a group of physicians to assist headache suffers and healthcare professionals, and to increase public awareness about the debilitating nature of headaches.
World Cervicogenic Headache Society [IA][Direct] -
Organization of healthcare professionals devoted to relieving the pain of patients suffering from headaches originating in the neck.