What is the definition of a sleeping disorder?

Answer 1

To qualify for the diagnosis of sleep disorder, the condition must be a persistent problem, cause the patient significant emotional distress, and interfere with his or her social or occupational functioning.

Answer 2

"A sleep disorder, referred to as somnipathy in the medical world, is a medical disorder in the sleep patterns of a person. These disorders can vary widely, from teeth grinding through to night terrors, from apnea to sleep walking, though they all have one thing in common, they interrupt or interfere with normal sleep patterns, degrading the recuperative value of sleep. While the causes of many sleep disorders can be identified there are many that cannot, these problems are labelled simply as insomnia, which can be read as an undiagnosable type of sleep disorder."

Answer 3

Like the first commenter said, it has be a condition that affects you in the most negative ways possible, not just randomly waking up in the middle of the night and not going back to sleep.