Chronic daily headache (CDH)——defined as having headaches 15 or more days per month——is a frequent and debilitating condition in children that results in severe decreased quality of life and emotional stress. Very little is known about the most effective types of treatment for CDH in children and adolescents. Development of effective interventions for youth with CDH could potentially prevent the progression of a very painful and costly condition into adulthood. Treatments combining pharmacological (drug) interventions with behavior change have been found effective in treating adults with chronic pain, including headaches, but have been understudied in children.