It gives me a headache just looking at this chart. If it's close to true then that means I typically get migraines, cluster headaches, and sinus headaches depending on many environmental factors changing.
If this chart is accurate what I have called migraines my whole life are actually cluster headaches. I’ve always described them to my wife like an icepick behind my right eye
Funnily enough I had the same assumption and was surprised that they are called Cluster headaches. I also get a similar localized headache, like the Cluster one, of that same size on the back of the head just above the neck and to the left... but I don't see that on the chart.
I guess cluster headaches only happen behind the eye then? I also never had the sweating/flushed face or dropping eye symptoms. I must have some other headache type that is similarly super localized like a cluster headache.