I had turned 13 and over the summer holidays, I began sleeping in until the afternoon and taking naps for the rest of the day. I put it down to feeling a bit depressed because my best friend at the time had moved away. My mum put it down to me being a lazy teenager. By the time I went back to school in September, the urge to sleep was becoming more frequent and more intense. I remember my eyes starting to sting in a religious studies lesson and I just wanted to shut them. At home, after school, I’d sit down and be asleep at exactly the same moment.