Anna was living a normal life. She was ambitious and worked hard; she had just bought an apartment; she was falling in love. But then she started to develop worrying symptoms: her face felt like it was burning whenever she was in front of the computer. Soon this progressed to an intolerance of fluorescent light, then of sunlight itself. The reaction soon spread to her entire body. Now, when her symptoms are at their worst, she must spend months on end in a blacked-out room, losing herself in audio books and elaborate word games in an attempt to ward off despair. It was during this period she began to write this book.