>>12371360
My sources are official diagnosis books like DSM and my own psychology studies, which both has a requirement of symptoms going on for at least 6 months (or more) and that needs to be under professional observation.
Most younger psychologists and psychiatrists tend to overlook this specific detail and they just diagnose you on sight, which is usually wrong.
So my biggest source is:
https://en.wikipedia.org/wiki/DSM-5#DSM-5-TR
https://archive.org/details/dsm-5-tr/mode/2up
If these are too few, I can search for other ones.

Your fortune: You will meet a dark handsome stranger