Restless legs syndrome (RLS): An irresistible urge to
move legs. RLS sufferers often also have PLMD.
Bruxism: The sufferer involuntarily grinds or clenches
his or her teeth while sleeping.
Delayed sleep phase syndrome (DSPS): A sleep disorder
of
circadian rhythm, characterized by the inability to
wake up and fall asleep at the desired times, but not by
inability to stay asleep.
Hypopnea syndrome: Abnormally shallow breathing or
slow respiratory rate while sleeping.
Narcolepsy: The condition of falling asleep
spontaneously and unwillingly at inappropriate times.
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): Sudden
involuntary movement of arms and/or legs during sleep, for
example kicking the legs. Also known as
nocturnal myoclonus. See also
Hypnic jerk, which is not a disorder. PLMD sufferers
often do not also have RLS.
Rapid eye movement behavior disorder (RBD): Acting out
violent or dramatic dreams while in REM sleep.
Hatzfeldt Syndrome or Systemic Neuro-Epiphysial
Disorder (SNED) is a somnipathy mainly characterized by an
irregular sleep pattern, as well as irregular behavior
Shift work sleep disorder (SWSD).
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 this is a symptom of sleep apnea.
