I was thinking about a good way to chart cluster headache episodes so the patterns would stand out and I started playing around with Microsoft Visio.  My patterns jumped out at me, with 3 times that correlate pretty closely to the season changes, with the Fall time falling in the middle of Fall rather than the beginning.

Let me know what you think:

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You maybe did that already but what I found interesting as well that along with season changes there is change in air pressure usually as well. I checked out a meteorological webpage that has historical data back to over a decade for the area I live in (tracking even per single day) and looking at the pattern correlating with a cycle starting there is definitely a difference in those years. I.e no cycle last spring, graph is pretty smooth whilst this year pressure jumps around (and I got visited bye the a$$hole right during a heavy drop in Feb this year again)

Sure just one part of many that adds up the chain reaction. (And also nothing anyone of us could influence)

Hey Mark,

Great chart.  If you'll check the historical pollen count for your area, I'm confident you'll see high levels of pollen in the Spring and high levels of leaf mold spores in the Fall that correlate with your CH cycles.

Take care and please keep us posted.

V/R, Batch