WHAT SLEEP DISORDERS CAUSE EXCESSIVE DAYTIME SLEEPINESS?
Obstructive sleep apnea: A very common disorder where there is obstruction of the nose and/or throat by enlarged tonsils, a deviated nasal septum etc. which results in pauses in breathing during sleep. Symptoms include snoring, morning headache and daytime fatigue. Obstructive sleep apnea can lead to heart failure and is a risk factor for heart attacks and strokes.