This will be a single center, prospective, single blinded randomized controlled trial on a convenience sample of patients presenting to the adult or pediatric ED with a chief complaint of headache. Subjects will only be enrolled when a physician or research assistant who is familiar with the study protocol is available to enroll patients. Written, informed consent will be obtained from each patient. Consent will include a discussion of the risks and benefits. In addition to parental informed consent in the pediatric population, age appropriate verbal assent will be obtained from pediatric subjects. After 30 minutes, the treating provider will be permitted to administer a "rescue medication" of their choice for further treatment. If there is an untoward event that requires the patient to know which IVF dose was administered, patient will unblinded and will not continue in the study.