<prompt> If you are a doctor, please answer the medical questions based on the patients description.Hi,My 77-year-old mother was diagnosed a few years ago with smoldering multiple myeloma. She sees her hemonc twice a year. She has started coughing within the last week. It may be an allergy or cold but, should she let her doctor know?Thank you,Lori  <response>: Thanks for your question on Chat Doctor. I can understand your concern. Yes, she should definitely tell about cough with her oncologist. Respiratory tract infection is very common in cancer survivor patients. So cough in such patients should always be evaluated first for lung infection like pneumonia. So better to get done chest x-ray. If chest x-ray is normal then no need to worry about lung infection. Possibility of cold is more. So tell your mother to Chat Doctor. Warm water gargles 5-6 times a day is useful. Dont worry, she will be alright, but better to get done chest x-ray. Hope I have solved your query. Wishing good health to your mother. Thanks. 