Excellent point about cluster headaches, thanks for sharing that link here! Have you used psilocybin for headaches, or do you know someone who has?
We're living in exciting times right now with MAPS and other organizations conducting research which will help rewrite the narrative on drugs, hopefully for the ultimate benefit of those who can derive psychological or physical benefit from these magnificent compounds.
Fortunately, i have not used psilocybin mushrooms as medication.
I saw a documentary about a family father living with cluster-headaches, who had resorted to psilocybin after tons of government-approved drugs that either didn't work, or had too severe side-effects.
The fact that he could grow the mushrooms himself, although illegally, to a tenth of the price of government-medication and had next to none side-effects, except for the 4-6 hours trip he would have to endure, really made an impression on me.
That documentary sounds very familiar, I may have seen the same one or at least something similar. It was really inspiring to see the difference in his well-being after coming down from the trip, and as you pointed out, the price was practically pennies!