From an 18 year old woman in the U.S.: I used to be a talkative outgoing person that would communicate with others and had the ability of making friends. My freshman year in high school I had the most friends. I talked to a lot of people had great energy. I was happy most of the time and would be myself with my friends. I had the best of times.
My sophomore year I became distant to all my friends and focused more on school. I was also disciplined, ate healthy, exercised regularly and had good night sleep. I would also spend a lot of time alone and had little to no communication on a daily basis. I had my happy moments during those times I would feel this energy and happiness, but I would only show it when I was by myself in my room. One moment I would be dancing and jumping in my room and the other I would simply crawl on my bed and begin doing my homework like nothing happened, and I would just assume it was my teenage hormones. I would feel a lot of déjà vu and I would relate my dreams to real life and started to believe I could predict the future (I know its unrealistic).
My junior year is when my anxiety started. I would feel nervous around others and I would keep my head down at all times. I couldn’t keep straight eye contact with most people my friends started to diminish and I started to become alone. Eventually I started feeling anxious with my own family too.
I started college and going to class started to get hard, not because I did not want to go and learn, but because my stomach would make strange noises and it was embarrassing. I would also have anxious moments and then at other times I would feel with a great energy, and I would feel happy/excited for no apparent reason. I also have difficulty sleeping at night. I forget things easily and I have a hard time concentrating. There are moments when I feel sad and depressed and then all of a sudden the depression would disappear. I am not shy. I just get very anxious around others and I can’t control it. I am not sure if I simply have depression or an anxiety disorder, but it is taking over my life little by little.