i applaud you for checking in with yourself about what you feel ready to talk about and what activates that wounded state for you. 'medical gaslighting' is an apt word for it and it should be addressed by the medical community because biases and prejudice are resulting in people not getting the diagnosis and help they need. a lot of doctors need to be trained to actually listen to their clients tbh.
i'm glad you made the decision to disengage with your parents for the sake of your own wellbeing. kudos to you for knowing what would be better for you and help you heal.