Our expert says:
Many times this can be caused by a post nasal drip due to chronic sinusitis that keeps on infecting your lungs and throat from the top as the phlegm runs down your throat as you sleep. The infection can also cause a type of irritation asthma or a chronic bronchitis which can cause a dry irritating cough all the time. I agree with the viral choice and vita thion but wonder if you should not maybe see an ENT specialist and have sinus x/rays or MR Scan - if this is the problem you need to take Flagyl and a wide spectrum antibiotic for at least 10 days. I also find that rinsing your nose with saltwater ( 1 cup on 1/2 teasp salt) makes the phlegm loose and clears the sinuses. Have they sent away the sputum to the lab to test and see if you have a resistant kind of bacteria?
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