Cluster headaches are a severe type of headache that is quite rare, most commonly affecting young adult males. Usually pain is on one side of the head, commonly around one eye and is sometimes accompanied by other symptoms including nasal congestion, lacrimation, ptosis, lid edema, miosis, and eye redness.
Cluster headache is a severe type of headache that occurs in a cluster, or cyclical pattern. Cluster headaches are characterized by recurrent, short-term attacks of intense unilateral pain, usually around the eye, that typically lasts between 15 and 180 minutes. The pain may radiate to other areas including the face, head, neck, and shoulders. Other autonomic symptoms may occur during a cluster headache, including nasal congestion, lacrimation, ptosis, lid edema, miosis, and eye redness. Patients suffering from cluster headaches may also experience severe restlessness or agitation during an attack.