<unk> s are a broad classification of sleeping disorder that make it difficult to get to sleep, or to stay sleeping.<unk> s are primary disorders of initiating or maintaining sleep or of excessive sleepiness and are characterized by a disturbance in the amount, quality, or timing of sleep.
Patients may complain of difficulty getting to sleep or staying asleep, intermittent wakefulness during the night, early morning awakening, or combinations of any of these. Transient episodes are usually of little significance. Stress, caffeine, physical discomfort, daytime napping, and early bedtimes are common factors.
Dyssomnia
Hypersomnia
Parasomnia
Insomnia
Excessive daytime sleepiness
Sexual obsessions
Sleep hyperhidrosis
Sleepwalking