First it's not your job to prove you have them. It's up to the medical community.
Second none of the tests today which they use can accurately say you have them or you don't yet they claim some BS without evidence like you being nuts just because they are simply badly educated about this issue. Period.
On top of that even the medical community "experts" about this issue tend to be badly educated who claim "cures" with flawed studies all around and anybody who understand the complex matter can rip them apart to shreds.
In the end ppl suffer and labeled nuts because of their mistakes and ignorance.