Which description is most consistent with cluster headache?

Cluster headaches are characterized by intense unilateral pain, often described as localized around one eye, with the severity being significant. This type of headache typically lasts from 15 minutes to 3 hours and can occur several times a day during a series of attacks known as a "cluster period." The pain is typically so intense that it might wake individuals from sleep, reinforcing its classification as a cluster headache.

The description of a severe headache localized over the left eye, lasting up to 2 hours, aligns closely with the typical manifestation of cluster headaches. Additionally, patients often experience accompanying symptoms such as nasal congestion, lacrimation, or redness of the eye on the affected side, which further supports this diagnosis. Cluster headaches are notorious for their abrupt onset and severe intensity, making the provided description a clear fit for this type of headache.