I had a female doctor who loved to tell me I was too young to be experiencing the things I was experiencing. Like I had neck pain from an incident at work (which has been ongoing for like 10 years now) and she said "oh young people just look at their phones too much". I also had a reaction to a piercing and she was insistent that the problem was "piercings and tattoos are bad for you", yet when I swapped the ring out for a hypoallergenic one (no thanks to anything she had to say to me), it cleared up extremely quickly.
But anyway, she was at least able to diagnose my PCOS, which a male doctor had prematurely diagnosed as "pregnant" so that was nice.