At least a few. In high school I started showing symptoms of depression from brain neurotransmitters inbalance. Once in particular I wanted to say something in a class small group discussion, but I could not figure out when to interrupt. I suddenly became very angry and yelled "stop!!", a few seconds after, my mood swings in the opposite direction and suddenly became irrational and very sad, tried to leave the classroom. I stopped myself, then faced the front of the classroom...then lost all emotional control by uncontrollable crying. I remember everyone was watching me, but I could not process anything else...
The teacher knew something was going on with me and let me sit in a chair away from the class to calm down. I remember crying for a long time.
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Slytherin/Thunderbird