Causes of Excessive Daytime Sleepiness - Differential Diagnosis Algorithm

Insufficient Sleep

 • Poor Sleep Hygiene

 • Insomnia

 • Behavioral Sleep Deprivation (Eg. Shift Work)

Sleep Disorders

 • Obstructive/CentraI Sleep Apnea

 • Restless Legs Syndrome

 • Periodic Limb Movement Disorder

 • Narcolepsy

 • Obesity Hypoventilation Syndrome

Medical/Psychiatric Disorders

 • Neurologic Disorders (Eg. Parkinson's, MS)

 • Head Trauma

 • Depression

 • Anxiety

Other

 • Medications (Eg. Benzodiazepines, Antihistamines, Opioid Analgesics, Antipsychotics)

 • Drug Abuse (Eg. Alcohol, Opioids)



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