I had my adolescence when I was thirteen.
It started with acne that showed up on my face. It was very annoying. It lowered my self-esteem and I was embarrassed to come out of my house and play with friends.Fortunately, my Mum gave me a good medicine. In three weeks, the acnes started to vanish although those showed some black spots in my face.
That was my bad experience with adolescence, though there were still lots of good experience too.