Welcome to Healing Well. Sorry to hear that you are suffering. I work on a Helpline for Cluster Headaches here in the UK, and I have received a minimal medical training from the top Neuro here who is a Headache Specialist, thankfully he is also my consultant.
I hope you don't mind me asking a few questions?
Does your eye droop on the affected side?
How long do your attacks last?
Does your nose or eye water on the affected side?
How many attacks do you have in a 24 hour period?
Do you have attacks daily?
The first line of abortive treatment for Cluster Headache is Imitrex injections and Oxygen at a high flow 15 litres per minute with a non-rebreather mask.
Preventative treatment for CH usually begins with Verapamil with ecg's before each time the dose is raised.
Some CH sufferers can also get an 'Aura' (your light show), this is rarer in CH than the usually associated Migraine! Please try not to worry, and hopefully your Neuro will sort something out for you. Is your Neuro a Headache Specialist? If not you could still find one who is!
If you want any further information about CH please feel free to email me, just click on the envelope under my name!
Co-Moderator of the Migraine/Headache Forum
DX: Hemicrania Continua, Chronic Migraine, IBS, Allergic Rhinitis and Heart Murmur
Meds: Imigran Injections, High Flow Oxygen, Mebeverine, Lansoprazole, Nasonex and Clarityn