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I will require some additional information from you so that I can provide my best and learned opinion.
1. Do you have breathlessness at rest (I understand you have breathlessness with activity)
2. Is there any swelling of legs ?
3. Are you comfortable at sleep ?
4. Do you have sputum ? (with the cough)
5. Ever had a similar episode in the past ?
You can reply as a followup
Patient replied :
I do have breathlessness at rest but not continuously. Usually when I'm having a short of breathe coughing episode. I do not have swelling in my legs. I'm somewhat comfortable at sleep. I had a rough night last night due to wheezing and coughing. And sorry for typo. I meant cherratussin didn't work. And yes I have sputum. I haven't looked at it for color. And no I've never had anything like this. I've had a bad cough before but not short of breathe. This time I mostly only cough when I get short of breathe and have back pain.
I was concerned about a cardiac cause for breathlessness. But you symptoms are NOT suggestive of a Cardiac cause. However this is not simple Bronchitis, especially since you have prominent breathlessness. I suspect a mild Pneumonia. You will need to get in touch with your Doctor.
The best course of action would be to get a Chest Xray done. You will need a course of antibiotics like Azithromycin / Amox-Clav / Cefixime. Even if the Xray is normal it is better to take a course of antibiotics. Most likely the bacterial infection is causing the breathlessness and sputum production. In mild case of lung infection you need not get fever.
You can continue the inhaler. But cough syrups are only symptomatic measure and since we suspecting an infective cause you should not take it. Steam inhalation through mouth twice daily can give good relief. Keep me posted. I will keep this consult open.
Hope this helps
Feel free to ask followups