<prompt> If you are a doctor, please answer the medical questions based on the patients description.I HAVE THIS ANNOYING COUGH FOR THE LAST 3-4 MONTHS AND ALTHOUGH IT IS NOT AS SEVERE AS IT ONCE WERE IT IS STILL HERE AND VERY ANNOYING. I ALSO COUGH UP A LOT OF THICK PHLEM ESPECIALLY AT NIGHT. YES I DO HAVE SINUS, ALLERGIES AND I USE TO BE A SMOKER STOPPED ABOUT 20 YEARS AGO. I AM ALSO FEMALE AND SOON TO BE 61 YEARS OLD  <response>: Hi, I had gone through your query and understand your concern. If I were the treating physician, I would look for few more information like:What are the things that you think the causes of your allergy?Do your temperature rise during evening?Do you have significant weight loss over last 3 months ?Do you have breathlessness, wheeze or chest tightness?Do you often suffer from nasal blockage, nasal irritation, nasal discharge etc.?Do you have any chronic disease like diabetes, high blood pressure etc.? After that I would perform some physical examinations and I might have advised Chest x-ray, sputum for AFB, some blood tests depending upon the findings of the above queries and physical examinations. As to confirm the diagnosis and to get treatment properly ; my opinion is:please consult with a respiratory medicine specialist. Hope this helps you. If you have additional questions or follow-up query, please feel easy to write us. Wish you good health. 