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greenish flegm also comes under purulent cough and usually signifies pseudomonal infection which colonises the airway in chronic infection.
Moreover exacerbation of chronic bronchitis has been defined by the presence of any of these 3 symptoms: increased baseline breathlessness, increased cough and increased purulency of the sputum so you may have acute exacerbation of your disease.
purulent sputum in chronic bronchitis is the indication for bronchitis.
Get a chest xray done to rule out pneumothorax
, consolidation etc. take a course of antibiotic like amoxycillin-clavulanic acid
and take inhaled salbutamol
Once you feel better take on to previous inhaler prescription and adhere to it for at least 3 moths...
IF you are not getting better you can try 40-60 mg of prednisolone
after breakfast. amd ofcourse meet your doctor....