I have a painful white scab in nostril and green mucus while coughing. Is it serious?

Dr. Amol Kumar Wasudeorao Diwan is a qualified Specialist in Pulmonary Medicine, Tuberculosis, and Respiratory Diseases with extensive years of clinical experience. He has a vast network of professional contacts in the medical field, an outstanding ability to provide healthcare with an emphasis on holistic approach, treating the patients as a physical, emotional, and social being, has an excellent bedside manner, and an admirable ability to establish rapport with the patient. He also has exceptional skills in imparting health related teachings for a complete and speedy recovery of his patients and has an incomparable critical thinking and analytical skills.

Dr. K. Shobana is a Dental Surgeon specializing in oral health and dental care. She is skilled in preventive dentistry and provides oral hygiene education. She can do restorative treatments such as fillings and crowns. She can handle periodontal problems such as gum diseases and periodontitis. She can do root canal treatment.