Welcome to the board Mum! I'm also guessing you might be from the UK. Please check out your most excellent support group..(as bob would say!

) but by NO MEANS stop hanigng out here. They just have area specific answers for your medical system.
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Okay......you have CH, the first thing you learn is pain killers do damned little, and end up causing you far more problems then they solve. The trick is to stop the MECHANISM of thr pain before it really sets in.
As previously mentioned, read this link.
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I am a 33 year CH'er, went from 90-120 minute rides, to 6-8 minute aborts just by huffing pure oxygen. For me it's not a stand alone treatment, but without question the cheapest, most consistently effective, fastest, with no side effects. Sounds too good to be true huh?

Imitrex injectables or nasal spray, don't get the pills they take too long to be absorbed to be of much use to CH'ers. I keep the ijectable on hand for when I get caught away from my 02, or the rare occasion when 02 won't beat it down. They're expensive and in my experience the 02 works most of the time so I don't use them much.
Look into energy drinks for now; Monster, Red Bull, any containing the combo of caffiene and taurine. Chugged at the first sign of an attack many can abort or really reduce an attack. I use it with my oxygen, I drink one on the rocks while aborting with 02. Seems to speed the abort and prevents the beast from coming back for a while.
Talk to your doc about prevents. A med you take daily to reduce the number and intensity of your attacks. I use lithium when I'm on cycle, at 1200 mg a day blocks 60-70% of my attacks. Verapamil is the typical first round prevent, but at doses higher then doctors are used to. Some go as high as 960 mg a day to get relief.
We've learned thru painful experience, your best shot at a decent treatment regimen lies in finding a headache specialist neuro. GP's know nothing about CH, most neuros are just as bad. At the same time, educate yourself and learn how to be a zealous advocate for yourself. Sitting back and waiting for a doc to save you is a recipe for many many many more painful attacks. We'll help you every step of the way.
joe