There are many possible reasons for presence of blood in cough. This could be due to respiratory tract infections, pneumonia, bronchitis, tuberculosis. Less common causes are lung cancer, bronchiectasis, foreign body and cardiac causes including congestive cardiac failure and mitral stenosis.
This warrants investigation no matter what your age group, especially if there is a previous history of smoking. I advise attending your family doctor for a detailed history and clinical examination to confirm a diagnosis in your case. Your doctor may order a chest x-ray, sputum microscopy and culture to help determine the cause of your symptoms.
These Q&A’s are for educational purposes and should not be relied upon as a substitute for medical advice you may receive from your physician. If you have a medical emergency, please call 911. These answers do not constitute or initiate a patient/doctor relationship.