Since a tonsillectomy some 15 years ago, I have developed many bronchial infections at least three times every  winter, some of which have lead to bleeding (4 x). I began smoking two years ago and smoked up to ten cigarettes a day. Since then, I have developed a persistent cough which produces clear sputum with no sign of infection. This cougChatDoctore for three weeks and went for two and is now back and Im suffering for two weeks now. I have since had to give up smoking. I also have type 1 diabetes for 37 years. I know the risk of smoking with diabetes but sadly, life often presents challenges that require nicotine support. Can you help diagnose?
Thanks for asking your question I completely understand your question actually cough is a symptom, can be due to smoking habit first thing to be done is quit smoking permanently smoking itself causes increase in size of mucous secreting cells in bronchus, that intern produces much of sputum and cough is a mechanism to expectorate that excess of sputum. You need to consult a pulmonologist who can consider some investigations like chest X-ray and one sputum investigations to rule out any other organic disease have your blood sugar checked frequently and maintain the level by consulting a diabetologistthanksfeel free to ask more questions may god bless you with good health