question: Hi. I am a 15 year old female and weigh 145. I am 5-3 ft. and everyday i am very irratable. When someone gets me mad i lash out. I also sleep for long periods of time at night and when i wake up i dont have motivation to get out of bed. I also feel lonely becuase we moved 7 months ago and have made no.friends. I think i have some sort of depression and my parents are sick and tired of my behavior and moods. They think i have a chemical inbalance. How can i find out if its depression or a chemical imbalance?