Cluster Headache Edit Meaning

1.

A rare medical condition causing severe head pain. The "headaches" tend to occur in clusters; One often gets 6-8 attacks per day for a few weeks, but then goes in to remission for several months. They are referred to as "suicide headaches" due to the high suicide rate among sufferers. They are often said to be the worst pain regularly experienced by humans.

My uncle killed himself after suffering for years with cluster headaches.