Parasomnias: epidemiology and management.

Area of Science:

• Neurology
• Sleep Medicine

Background:

• Parasomnias encompass a range of sleep disorders including disorders of arousal, REM sleep behavior disorder (RBD), nocturnal seizures, rhythmic movement disorder, and bruxism.
• These conditions are characterized by undesirable physical or behavioral events during sleep, which can be distressing or hazardous.

Purpose of the Study:

• To provide an overview of the classification, clinical evaluation, and management of common parasomnias.
• To highlight the diagnostic approaches and therapeutic strategies for various parasomnias.

Main Methods:

• Clinical interview with the patient and family to detail the frequency, duration, and nature of sleep events.
• Physical examination and review of systems to identify associated neurological conditions.
• Polysomnography (sleep study) with expanded electroencephalographic montage for differential diagnosis.

Main Results:

• Disorders of arousal are common, ranging from sleepwalking to complex behaviors with no memory upon waking.
• REM sleep behavior disorder (RBD) involves dream-enacting behaviors due to lack of muscle atonia during REM sleep.
• Polysomnography aids in distinguishing parasomnias from nocturnal seizures.

Conclusions:

• Parasomnias are diagnosable and treatable, with evaluation starting with a thorough clinical interview.
• Treatment may include safety precautions, sleep hygiene, medication (e.g., benzodiazepines for RBD and arousal disorders), or dental guards for bruxism.
• Reassurance and demystification are important aspects of managing parasomnias, especially in pediatric patients.