Management of Primary Headache in the Emergency Department

Abstract

Headache is a common presentation to emergency departments (EDs), comprising nearly 4% of all ED admissions.‎1 While the overwhelming majority of patients present with a primary headache disorder, particularly migraine, the emergency physician’s role calls for the simultaneous exclusion of severe or life-threatening pathology while providing judicious and effective symptom relief.‎2 Notably, recent investigations suggest that this dual mandate performs well, excluding more than 99% of conditions resulting in serious adverse neurologic sequelae, though at the cost of high-frequency and low-yield advanced imaging utilization.‎3‎, 4 While a comprehensive understanding of the diagnostic process and underlying pathophysiology associated with headache disorders is critical for the emergency clinician, this review is meant to chiefly describe the treatment of primary headache and the variety, efficacy, and indications of those interventions. While individual headache type classification can be helpful in targeting approach or therapy, diagnosis can be difficult in the emergency setting, and primary headaches of most types are often approached similarly in the ED. Interestingly, the overwhelming majority of patients who present to an emergency department with acute primary headache have migraine, but the majority of patients receive a less specific diagnosis and a treatment that is correspondingly nonspecific.‎5 Importantly, however, the dynamic, diverse, and unique nature of different headache presentations to the ED make an algorithmic or step-wise approach to headache management ill-advised. The emergency practitioner must have a working knowledge of the array of treatment options available and apply therapies in a considered and informed manner. Following effective analgesia, however, the most important intervention emergency physicians can deliver for their headache patients is to connect them with outpatient physicians savvy about headache management, who will then provide these headache patients with appropriate acute therapeutics, initiate preventive therapy and provide anticipatory guidance about their disease process.‎6