I am an 18 years old guy that has to deal with this mental condition. I usually laugh uncontrollably and laugh for a long period and it always causes me problems. For instance, when I am in classes and a insignificant thing happens I just start to laugh and can't stop. Inside myself I don't find that thing funny and I want it to stop, but I can't. It's like something thickling from inside the chest. Even when I argue with someone I just start to smile and laugh and I just try to get serious, but seems impossible. I am not in control of my self. This whole thing makes me want to die, cause i can't behave how i want. So suicidal thought are normal for me now. I even hurt myself in order to make me stop laughing. This thing is causing me to laugh even right now. Please tell me what i can do to make it stop!