Insomnia – the inability to sleep or to sleep satisfactorily – is the most common sleep disorder. Symptoms vary from restless or disturbed sleep, to difficulty falling asleep, to a reduction in the usual time spent sleeping. In the extreme, it may involve the total inability to sleep for days at a time.

According to the American Association of Sleep Medicine, occasional insomnia is experienced by more than a third of American adults, and chronic insomnia is known to plague more than one in 10. Insomnia can disturb your waking as well as your sleeping hours. It can cause you to feel sleepy or fatigued during the day, affect your mood and result in trouble focusing on tasks.

Recent research into physical and psychological factors, lifestyle and  environment is making it possible for sleep doctors help most troubled sleepers. Looking at both the daytime and the night time effects of insomnia can help you and your sleep doctor understand the causes of this condition and provide a basis for treating the disorder.