Cluster headaches are a different type of primary headache disorder. They belong in the family of headaches called trigeminal autonomic cephalalgias. They can sometimes have symptoms similar to migraines, such as nausea, but they are different types of headaches.
Cluster headaches are strictly one-sided headaches, typically around the eye and these are very severe, excruciating headaches lasting anywhere from fifteen minutes to three hours. Typically patients with cluster headache what we call unilateral, ipsilateral cranial autonomic symptoms, and this could be symptoms such as tearing of the eye, redness of the eye, swelling of the eyelid, runny nose or stuffy nose, on the side of the headache.
