Stores has done a great service in providing this guidebook for pediatricians who want a quick reference to match a patient’s, or parent’s, complaint against the diagnostic features he outlines and the case summaries that illustrate each of the disorders in turn. The book is particularly good at including the family context in understanding the issues that may be involved in the origin and/or maintenance of these disorders, as well as how they may affect the plan for treatment. He is very aware that the state of knowledge about sleep disorders, particularly as they appear in children, is not as fully developed as we would like. He understands that the same diagnosis may have different symptom presentations in children than in adults. Disorders such as narcolepsy, which is manifest as daytime sleepiness in adults, may show as hyperactivity in youngsters. In addition, an overlap in the symptom pictures may make a clear diagnosis difficult, posing questions such as, Is this a seizure disorder or a parasomnia? How does one sort out whether an episodic oversleeper is suffering from Klein-Levin syndrome, has a bipolar variant, or is suffering from the aftermath of some infectious disease?