Difficulty speaking: The most common cause of "difficulty speaking" is shortness of breath. This is usually a sign of serious illness including pneumonia, blood clot to lung, heart attack, asthma, heart failure, or other severe allergic reaction. You should see a doctor promptly for shortness of breath. Fatigue is a separate problem. Most people can cope with it if it is short-term; after 2 months, see a doctor.
Answered 7/20/2012
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