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Normally, the muscles of the upper part of the throat help keep the airway open and allow air to flow into the lungs. Even though these muscles usually relax during sleep, the upper throat remains open enough to let air pass by.
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Excessive daytime sleepiness is the complaint that usually brings a person to see the doctor. A careful medical history will include questions about alcohol or tranquilizer use, snoring (often reported by the person's partner), and morning headach...
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Causes of central sleep apnea include various severe and life-threatening lesions of the lower brainstem, which controls breathing. Examples include bulbar poliomyelitis , a form of polio affecting the brainstem; degenerative diseases; radiation t...
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Excessive daytime sleepiness is the complaint that usually brings a person to see the doctor. A careful medical history will include questions about alcohol, tobacco, or tranquilizer use; family history; snoring (often reported by the person's par...
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An acute upper airway obstruction is a blockage of the upper airway, which can be in the trachea, voice box (laryngeal), or throat (pharyngeal) areas.
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