I hear you. My mom pulls that everytime I disagree with her. then it's "we should call the doctor and have him look at adjusting your meds." Last time that happened both my father and my husband exploded at her, but it still hurts that she thinks that my illness is just a great way to devalue my feelings and opinions.
Maybe it doesn't help much from a distance, but hang on, you're not alone with that type of thing. It hurts, it's cruel and if I could I'd come over and get all mannicky all over your folks for you
(at least my kind of manic) Just kidding. I'll hug you instead
You deserve better than that.