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Parasomnia NOS

(Also Known As: Parasomnia, Parasomnias, Insomnia, Sleep Disorder, Sleep Problems, Dyssomnias, Parasomnia Sleep Disorder)

(Reviewed by: Paul Peterson, Licensed Therapist)

What is Parasomnia NOS?

Parasomnia is a group of sleep disorders that are characterized by a disrupted sleeping patterns and disturbed sleep. Abnormal behaviors and experiences usually occur during sleep. There are different types of Parasomnia which also vary in frequency and severity. While some Parasomnias are outgrown by a child some may persist in its chronic form into adulthood, which usually requires immediate medical treatment. The sleeping disorder in Parasomnias usually involves abnormality in behaviors, perceptions, emotions, and dreams that occur while falling asleep, between sleep stages, while sleeping, or during arousal from sleep.1

Parasomnia is classified according to whether the signs and symptoms are primary phenomena of the sleep itself or if they are secondary phenomena that are caused by different underlying disorder such as: 2

  • Somnambulism/Sleepwalking
  • Somniloquy
  • Confusional arousal
  • Bedwetting
  • Sleep starts
  • Night terrors
  • Rhythmic movement disorder
  • Bruxism (teeth grinding)
  • Nocturnal eating disorder/ nocturnal seizures
  • Paralysis
  • REM behavior disorder
  • Hypnagogic hallucination

A sleep disorder that does not belong to any of the categories of Parasomnia disorder is diagnosed as Parasomnia Not Otherwise Specified (NOS). This belongs to the Axis I of the Diagnostic and Statistical Manual of Mental Disorders with DSM code number 307.47 under the sleep disorders category.3 It is noted that the NOS is an abbreviation for not otherwise specified which is used for any mental disorder that falls within a larger category but does not meet the criteria for any specific disorder belonging to that category.

Could You Have Parasomnia NOS?

Parasomnia NOS Topics

Related Conditions

Nightmare Disorder – Nightmare, Fear, Inability to Sleep, Fear, Anxiety, Moaning, Frightening Dreams
Sleep Terror Disorder – Nightmare, Sleep Disruption, Sleep Awakenings, Sleep Agitation, Fear
Sleepwalking Disorder – Somnambulism, Walking Asleep, Nocturnal Sleep Walking Episode