I'm sure ther could be plenty, so keep a journal of what you do so you know what triggers them for you. Everyone is different. But normal triggers would be definately alcohol, scents, any kind of smoke. Chocolate and foods containing sulfites, llike eggs and lunchmeat could maybe be triggers, too. Not for me, but maybe for some. Other things I found that might trigger one for me are anything that  could bring a rush of blood to your head. I got one after singing a song already because of the blood rush from holding the notes. Good luck finding out what you need to avoid.

Back when I first getting hit by CH, I thought that if I drank a few beers that I wouldn't wake up in the middle of the night......BIG MISTAKE! I learned that alcohol of any kind would serve me a butt kicking from the beast at about 1am.

These days, the only trigger that I can actually put my finger on is irritation.

I can go from PF into a shadow in no time if I get irritated enough(which is why I originally thought that I had TH until my doc diagnosed them as CH).

weather. is a b@^#h.

pf wishes

A good topic to bring up again. Alcohol is a very common trigger...stress is a funny one, for some like me, extended stress will bring an attack, for others, as soon as they get a release from stress, they get hit. My other triggers are getting really hungry and screwing up my sleep cycles. If you're not already keeping a headache journal, you should start. It's a good way to track triggers.

But a warning......avoiding 100% of your triggers...will sadly only reduce, not eliminate your hits.

Joe

Major temperature swings (say about 20 or 30 degrees in the space of a day), can bring on mucho CH for me.

The only thing I've ever found that seems to trigger me is the barometer. When it starts rising - I get hit.

When I was episodic - alcohol did the trick, but I LEARNED not to drink and that worked out well... I still got hit, but I saved a lot on booze.

But in answer to your question... there hasn't been anything, except maybe alcohol (for most) that's been PROVEN to be a trigger for us. We just get hit no matter what the devil we do or don't do.

Lol Diezel, sure sure!

For me alcohols a definate, even if its just cooked into things.  Naps and strong smells do it for me too sometimes but not everytime.

You mentioned computer screens which don't trigger me but oddly, when I was having CH I couldn't stand to look at a screen for long.  Nothing physical but... Very odd considering I usually live on my computer. :p

Alcohol – a few mouth full’s of beer will generate a real barn burner.

Sleep – I get a hits during daytime hours but I call CH “This Nightmare” for a reason - way too many nights spent trying to find anything to keep me awake.

Naps – Try to catch a few zzz’s after staying up all night, nearly guaranteed hit.

Extreme cold – If it gets down into single digits and I’m out in it – one of those instances where daytime hits occur.

Strong sun – A good amount of exposure to strong sun can trigger some nasty daytime hits.

Strong solvents, pesticides, maybe strong smells?? – no consistency here but frequent and severe enough to make me aware of what I’m doing and how long I’m exposed to these.  2/3’s of the time nothing happens but the remaining 3rd can result in severe hits that sometimes push that 3 hour limit.

Missing a med. dose or being more than two hours late with one can really set of a long-term increase in frequency and severity that often takes a week or so to stabilize.  Naturally I've learned to keep this stupidity to a minimum.

burnt-toast
(Tom)   

When I am in a cycle,
Alcohol
Altitude
Airplane trips
Sleep

I don't have too many triggers...the only one that seems to be consistent is time of year. I am always hit heaviest at this time of year. After the New Year it mellows out a bit.

Barometer swings cause some grief, I think. One thing I noticed was that when travelling overseas for work I never got hit when I was close to the equator. Don't know if there's anything to this, but the weather was consistent, same amount of daylight everyday, and no major barometer swings. I'm trying to convince my wife to move to Singapore but I don't think she's buying it.

For me odd as it seems alcohol is not always a trigger.  A definite trigger is sudden changes in barometric pressure (up or down).  Warm stagnate air (a stuffy room) will always trigger HA.  Perfumes almost always trigger a HA.  Fatigue or really lack of normal 6 hours sleep will trigger a HA.

Alcohol
Nitrates
MSG
strong perfume
strong petroleum fumes
bystander smoke of cigarettes/cigars/burning leaves etc..
Too much sleep