He likes to lock the door in his room. My mother and I wondered for years until we decided to steal my little brother's phone and looked at his history in browsers and found a ton of porn pictures, porn videos, and porn games. When he don't play porn games, My little brother would get hard all the time and he said it was very painful. And it's not like a porn games because My little brother told my mother (my mom and his mom) to use her hands to help, but my mother didn't. Even though it hurt her to see how much he suffered. He had to control himself to heal his addicted. I can't do anything. His addiction to porn and porn games makes him afraid of society. He is afraid of everyone he doesn't know and is extremely paranoid when he sees strangers and stays indoors and doesn't go out. The only way is to cure his addiction.