back when i was 15 i had jaw surgery to move my jaw forward as i had a bad overbite. the surgery involved cutting of both sides of my lower jaw sliding it forward, and wiring it shut for 6-8 weeks. it was after this surgery i stared to develop weird headaches where one eye would close and water at first these headaches where tolerable but within 3-5 years became full blown crying,pacing, head bangin cluster bombs. fast forward to age 24 i think. it was then i saw a oral surgeon in wpg mb, who was 100 per cent certain i had tmj. and due to reduced cartilege in the right side of my jaw i should have a surgery that now LOWERS the jaw joint,or increases the gap. the reason i ended up in his office was because of the jaw pain from my early undiagnosed cluster headaches. so i had the surgery praying this would relieve my symptoms. it did not. all it did was screw up my bite and possibley cause me even more grief than i should be in ....maybe, but when i returned to complain to the surgeon that the pain was not gone he said i had an infection gave me a prescription for it and sent me on my way saying there was nothing more he could do. to this day i wonder if any of the surgeries ive had in my jaw are the complete reason i have cluster headaches or if its just coincidence. i wonder if i will ever know....sigh

Medical literature has a steady stream, if small, of reports where what appears to be Cluster is, in reality, a disorder which mimics Cluster. See:
Link to: cluster-LIKE headache:

IN: "Medications, Treatments, Therapies --> "Important Topics" --> "Cluster-LIKE headache"

A true Cluster, under current thinking, arises from a malfnction of the hypothalmus. Other "cluster-LIKE" disorders develop, as you can read, from a wide range of conditions which appear to have no relationship to headache disorders.

Point being: takes a sharp doc to diagnose and many, I assulme, don't know about the "cluster-LIKE" syndrome.