Amazon.com description: Product Description: These books offer readers a means of understanding various ailments; clear, careful explanations offer insight into what these conditions are, what causes them, how we cope with them, and the latest information about treatment and prevention.; A sleep disorder is a condition that affects normal patterns of sleep and wakefulness. Although sleep disorders are not new, modern life seems to be intensifying the problem. Round the clock work schedules, globalization of commercial markets, stores that; All volumes in the series include primary and secondary quotations, annotated bibliographies, detailed indexes, and lists of organizations to contact for additional information.