I just tried "explaining" depression to someone for the first time ever, and it was exhausting...I was told I used my T as a crutch and asked why the goal wasn't to get me out of there (therapy) as fast as possible
I finally got through to him as I stuck to my guns and didn't just haul it out of there (mostly because he had to drive me to my car, to be honest, sigh), and he seems to understand now and has explained some of what he said to me and why (his own life experiences, such as the bad marriage counseling he had, etc.). If I hadn't known this person for over 15 years I wouldn't have bothered to give him the benefit of the doubt and listen to his explanation, but we are communicating through it. And since I have like 2 friends otherwise (literally) and he is someone I can hang out with since we are both unemployed, I am going to see if he can be my friend.
Anyway, these people teasing you don't deserve to be your friend. The teasing has to be even worse than not understanding and giving you a hard time because they don't get it; they aren't looking to. I wouldn't give them the time of day anymore. You deserve to have only positive people in your life.