Is It Okay To Isolate From Other Christians?

I find myself isolating from others until I feel like myself again. I'm at war with myself with my mental health issues like borderline personality disorder, depression, anxiety, PTSD. My new friends don't know that I'm battling with this. I feel like my former friends labeled my mental health as I'm using it as an excuse or I'm being attention seeking, etc which was far from the truth instead of supporting me. Is it okay to isolate yourself from other Christians and not telling them how you feel?