Many causes: The problem can be related to your airway or your heart. Airway causes include lung conditions such as asthma or bronchitis. It can also be related to the airway higher up such as at the voice box, base of tongue, or nose. Causes can also be related to your heart. If your heart is not effective in pumping out adequate blood, your body may not be getting adequate oxygen.
Answered 6/15/2014
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