Excerpt from this article:
Achieving a precise measure of “good sleep” is becoming a new source of stress, say the doctors, and thus sleeplessness. Mr R is one of three case studies in the paper. “They were actually destroying their sleep by becoming so dependent on these devices,” one of the authors, Sabra Abbott, told Health magazine. The researchers coin a new term, “orthosomnia”, to describe a disorder caused by the quest to achieve perfect sleep.