I was required to bring someone to the diagnostic appointment I had at a mood disorder clinic. They were seated somewhat out of my line of sight and the dr would look at her to verify what I said and she added information a few times. I did not like it but it was the only way they'd see me and I knew I really needed to have someone with expertise diagnose me because I was a wreck, on meds that were causing more harm than good, nobody seemed to be sure what was wrong with me and I was getting worse very quickly.

Otherwise no. My mom has driven me a few times but has only come up and met the pdoc once when I was in a wheelchair and needed help pushing myself around. She didn't participate in the session, we just all talked for a moment after the session. It was awkwad. She's been to a therapy session which did not go extremely well. Near the end my therapist walked her out and whatever was said in those few minutes must have not been happy because he gave up on trying to convince me that she could handle certain things and she resented him mightily for a while.