Bruxism: The sufferer involentarily grinds his or her teeth while
sleeping
Delayed sleep phase syndrome (DSPS): a sleep disorder of circadian
rhythm
Insomnia: Inability to fall asleep at will or at normal times
Jet lag or desynchronosis: Temporary condition resulting in out of
sync sleep patterns as a result of rapidly travelling across multiple time
zones
Narcolepsy: The condition of falling asleep spontaneously and unwillfully
Night terror or Pavor nocturnus or sleep terror disorder: abrupt
awakening from sleep with behavior consistent with terror
Parasomnias: Include a variety of disruptive sleep-related events
Periodic limb movement disorder (PLMD): Involuntary movement of arms
and/or legs during sleep
Rapid eye movement behavior disorder (RBD): Acting out violent or
dramatic dreams while in REM sleep
Restless leg syndrome (RLS): An irresistible urge to move legs while
sleeping. Often accompanies PLMD.
Sleep apnea: The obstruction of the airway during sleep
Sleep paralysis: Conscious paralysis upon waking or falling asleep
Sleepwalking or somnambulism: Engaging in activities that are normally
associated with wakefulness (such as eating or dressing), which may include
walking, without the conscious knowledge of the subject
Snoring: Loud breathing patterns while sleeping, sometimes accompanying
sleep apnea