Abstract
Hypersomnia, or excessive daytime sleepiness, is common with obstructive sleep apnea (OSA) but normally improves with use of continuous positive airway pressure (CPAP) therapy. OSA is well known for breathing disturbances associated with variations in heart rate, arousals, and resulting sleepiness in the daytime. Some people continue to experience hypersomnia despite routine use of CPAP therapy. Assessment of OSA patients who continue to complain of excessive sleepiness despite CPAP use must include an initial assessment of therapy compliance. If other potential causes of hypersomnia are not found or thought to be the issue, then treatment with medication is warranted.
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