Primary Hypersomnia: patient has excessive sleep without any medical conditions and is sleepy during the daytime.

 

Narcolepsy: sleepiness during the daytime in which the patient can have sleep attacks (quickly falling into sleep). Is associated with REM sleep during the day, hallucinations, cataplexy, sleep paralysis.

 

Breathing-Related Sleep Disorder (Sleep Apnea): sleep disruption at night that results in day-time sleepiness.

 

Circadian Rhythm Sleep Disorder: patient’s sleeping schedule does not correspond to his preferred sleeping schedule.

 

Dyssomnias Not otherwise Specified:   includes Nocturnal Myoclonus (periodic leg movements) and restless leg syndrome.