A. Sleep apnea is associated with snoring, restless sleep, memory disturbance, poor concentration, depression, and anxiety disorders.
B. Nocturnal polysomnography demonstrates apneic episodes, frequent arousals, and decreased slow wave and rapid eye movement sleep.
C. Apnea can be central due to brain stem dysfunction or obstructive due to airway obstruction. Obstructive sleep apnea is the most common type.
III. Differential Diagnosis: Other Dyssomnias, medical conditions and substance abuse or withdrawal
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