Earlier quoted context omitted.
It's interesting that I'm reading a book written by a person who suffered from cluster headache. It's a book about mindfulness in which he suggests to treat your pain as a message and listen to that message, that is, study the pain. He no longer has this headache.
Cluster headaches are sporadic and their cause is unknown. A person can have one once and never again. Best not to read into anecdotes.
Someone gave you information to the contrary, and now you are suggesting not using an anecdote as proof of a treatment’s efficacy.
That’s called “moving the goalposts”.