Migraine and Cluster Headaches

Headache disorders are characterized by recurrent headaches and impact over 40% of the global population. One of the most prevalent headache disorders is migraine disorder. A migraine is more than just a light headache; it’s a neurological disorder characterized by recurring episodes of moderate to severe head pain that can be deeply debilitating. Migraine pain is often described as throbbing or pulsating and may last from several hours to as long as 72 hours if left untreated. For many people, migraine makes it difficult to work, maintain relationships, enjoy hobbies, or manage basic self-care. A migraine attack is frequently accompanied by additional symptoms, including: nausea, vomiting, sensitivity to light, sound, smell, or touch.

Although cluster headaches share some similarities with migraine, they are a distinct neurological disorder with unique characteristics. Cluster headaches occur in short but intensely painful attacks, typically lasting 15 minutes to two hours, and often appear in recurring cycles or “clusters” over weeks or months. The pain associated with cluster headaches is sudden, severe, and piercing, usually concentrated on one side of the head, often in or around the eye. It is frequently noted as one of the most painful conditions a person can experience, described as a “red hot needle.”  It can be accompanied by excessive tearing or redness of the eye, swelling around the eye, facial sweating or flushing, and nasal congestion or a runny nose on the affected side. Cluster headache affects approximately 1 in 1,000 people and is more common in men. Accurate diagnosis can be challenging, and many individuals are initially misdiagnosed, delaying appropriate treatment options. 

Despite the severity and prevalence of migraine and cluster headache, treatment options have historically fallen short. Headache disorders are the fourth most common reason for emergency department visits in the United States. Yet, emergency care often exacerbates symptoms rather than relieves them—long wait times, bright lights, noisy environments, and rushed evaluations can intensify pain and distress for headaches.