Migraine and the Emergency Room: When to Go and What to Expect

Most migraine attacks, even severe ones, do not require emergency medical care. The majority of attacks can be managed at home with appropriate acute medications, rest, and the passage of time. But a subset of migraine-related situations does warrant emergency evaluation, and knowing the difference between a migraine attack that should be managed at home and one that requires immediate medical attention is important clinical knowledge for anyone living with migraine.

The decision to go to an emergency room with a migraine is not always straightforward. Severe pain that is not responding to medication, duration that has extended far beyond the usual attack, and the appearance of new or unusual symptoms all create situations where emergency evaluation is appropriate. Conversely, visiting an emergency room for an attack that is severe but consistent with the patient's usual migraine pattern often leads to treatments that are less effective and more burdensome than what could have been arranged through a planned care pathway.

When to Go to the Emergency Room

The clearest indication for emergency evaluation is a sudden severe headache that is unlike any previous headache. This presentation, sometimes called a thunderclap headache, requires immediate evaluation to rule out subarachnoid hemorrhage, a life-threatening bleed around the brain that presents with the sudden onset of the worst headache of a person's life. This is a medical emergency that requires imaging and cannot be safely managed at home.

New neurological symptoms accompanying a headache also warrant emergency evaluation. Weakness of an arm or leg, facial drooping, difficulty speaking or understanding speech, sudden vision loss, loss of coordination, or altered consciousness are not typical migraine features and raise concern for stroke or other serious neurological events that require immediate evaluation.

Fever combined with severe headache and neck stiffness suggests meningitis, a potentially life-threatening infection of the membranes surrounding the brain that requires urgent evaluation and treatment.

Status migrainosus, defined as a migraine attack lasting more than seventy-two hours without relief, warrants medical attention though not necessarily emergency room care. A call to the treating physician to discuss options including infusion therapy or intravenous medications may provide a pathway to treatment that is more effective and less disruptive than an emergency room visit.

What to Expect in the Emergency Room

Emergency rooms prioritize by acuity, and a patient presenting with severe headache will typically undergo triage to assess vital signs and the severity and character of the presentation. If the headache is sudden onset or accompanied by neurological symptoms, the evaluation will move quickly and may include brain imaging, lumbar puncture, and blood tests.

For patients presenting with what appears to be a typical migraine attack that has not responded to home medications, the evaluation is usually more straightforward. A physician will take a headache history, perform a neurological examination, and assess whether the current attack is consistent with the patient's usual migraine pattern.

Treatments Available in the Emergency Room

Emergency treatment for migraine typically involves intravenous or intramuscular medications that are not available in standard oral form. Intravenous prochlorperazine and metoclopramide, dopamine antagonists with both antiemetic and analgesic properties, are among the most effective treatments for acute migraine in the emergency setting and are generally preferred over opioids, which are less effective for migraine and carry risks of dependence and medication overuse headache.

Intravenous valproate, intravenous magnesium sulfate, and intravenous ketorolac are also used in emergency migraine management depending on the clinical situation. Intravenous or subcutaneous dihydroergotamine is effective for severe refractory migraine and is available in some emergency settings.

Opioids are not recommended as first-line treatment for migraine in the emergency setting by current guidelines. They are less effective than migraine-specific treatments, associated with rebound headache, and carry risks that outweigh their benefits in most migraine presentations.

Communicating With Emergency Staff

Patients presenting to an emergency room with migraine benefit from being able to describe their typical attack pattern clearly, specify the treatments that have been tried at home and their effects, and identify any features of the current attack that are different from their usual migraine. This information allows emergency staff to distinguish a typical severe attack from a presentation that warrants additional evaluation.

Bringing a list of current medications, known allergies, and the name of the treating neurologist or primary care physician facilitates communication and may allow emergency staff to contact the treating provider for guidance.