I was just wondering,whilst chilling out here in the hot Italian sun [smiley=cool.gif]. And,it not being a trigger for me.How many of my fellow clusterheads it is. :question.

Hoppy.

Not me either. Mine are completely random.

No problem with the sunlight being a trigger.

For temperature, the hottest I've experienced whilst in cycle is in the mid 40s whilst over in Perth, Australia which if anything helped prevent them. And before people think the mid 40s are rather cold, that is around 45C, so about 113F.

Heat never was but on cycle, bright sunlight, more so when glaring in through a windshield, was a nasty trigger for me.

Joe

Not a trigger but the bright sun is very painful to my eye while in cycle.  Lots of squinting and shades. :exclamation

wishing a great day
bobby

Lancet. 1999 Sep 18;354(9183):1001-2.
Comment in:
Lancet. 2000 Jan 8;355(9198):147.

A new cluster headache precipitant: increased body heat.

Blau JN, Engel HO.

Exercise, a hot bath, or elevated environmental temperature provoked cluster headaches, within 1 h, in 75 out of 200 patients. This new observation accords with recognised precipitants--alcohol, histamine, and gyceryl trinitrate--perhaps via generalised vasodilatation or hypothalamic activation.

Publication Types:
Letter

PMID: 10501368 [PubMed]

I must chime in on this thread considering I live in one of the hottest and sunniest places on Earth.  My cycles often begin in August which is toward the end of our 7 month (April--October) summer here in Sin City. 

As for sunshine, it's always sunny and blue skies here and I miss the common cloudy overcast sky days of when I was living in the midwest and east coast.  I don't go anywhere without sunglasses, so the sun does not bother me.

I have found that excessive heat usually starts my cycle.  Every July I go on vacation up north into the green mountains to cool off and after a week or two I must return to this sandbox feeling a hot blowdryer of 115+F with 20 MPH winds.  Usually within a week or so, my cycle begins.  Coincidence of going from cold and humid to extreme heat and dry weather?  I don't think so as I believe the sudden heat change of extreme temps is a trigger for most of my cycles starting.

Often wearing a long sleeved shirt and tie with long pants, sox and closed toe shoes doesn't feel too comfy in the hellish heat going door to door to 50+ business/daily, especially 3 summers of driving around for 8 hours/day without A/C.  Solution to this problem is get an indoor job and keep the A/C running cold.

Dehydration is a never ending challenge and have noticed always feeling better when drinking lots of water and eating regularly scheduled nutritious meals.

Some CH'ers would agree where we live has much impact on our cycles beginning and ending, triggers, duration of cycle, along with frequency and intensity of attacks.

I look forward to moving as soon as opportunity presents itself elsewhere. ;)

-Gregg in Las Vegas

Here in bright and sunny Florida... late summer sun and heat can be a trigger for me. If I get overheated it will trigger headaches. And the sun is a b*tch during a CH. But television, movies, and alcohol also bring them on. As does sleep.  [smiley=worried.gif]

Well, this is all getting really interesting...

In the past 7 years or so, all my annual cycles but one were between May and September. Of course, I found this research about body temperature & CH. However, we do know attacks may be triggered by numerous things, most of which are not exclusive to summer.   

So I asked myself what else could be so special about summer that it is my weakest link. Came out with three possible triggers:

a. nutrient loss due to excess sweating during summer. This would explain why the D3 regimen works for many.
b. imbalanced hormones / neurotransmitters due the a longer exposure to sun light. We know sunlight decompose melatonin and affects serotonin.
c. stressed muscles around the eyes and face and / or changes in brain activity, as a response to the stronger sun light and / or difference in light wave length.

For "c", I started using sunglasses this summer.

It may also be that heat causes expansion, which is why the days are longer in summer.

Hi Everyone,
Thanks for all your replies. After reading through them with
much interest, again it seems to boil down us clusterheads
are all different.Maybe just another reason why the cure is
so elusive.

Cheers, Hoppy.

Heat is definitely a trigger for me and makes them much more intense.  When on vacation once driving from CA home via the southern route through San Diego, Los Vegas, Arizona, up through 4 corners and into Colorado and on home to WIsconsin.  I was just plain miserable!  I ended up making ER trips in Vegas and Arizona at an Indian reservation.  That was early in my ch days when nothing was working and I was new to not knowing the ER drs are worthless especially when they don't have your records and all you have is your word of what is going on. Thanks Bob for that interesting info on the study.  Now I stay out of the heat whenever possible in nice air conditioned indoors and avoid road trips. 

Hi Tiffany,
I thought this thread might answer some of your  :question.
It would seem that heat and sun outside is a trigger for
CH's. But no one has mentioned heat being a trigger when inside.

Hoppy.

Hi Neal,
I thought this thread might be of some interest to you.

Hoppy.