If you're not already in therapy, I would suggest that as your first step. Your T can evaluate whether you need to be hospitalized.

Regardless of whether you need to be hospitalized, you can ask your parents to attend a session with you where your T can explain what is happening to you. I had a similar experiencing with my family - they were always questioning "Why?". Once my T was able to explain what I wasn't able to they got it and they learned how they could help me.