irritation of the throat from violent coughing, blood clot
in the
lung, bronchiectasis, bronchitis,
cancer, cystic fibrosis, inflammation of the
blood vessels in the lung, nosebleeds, pneumonia, tuberculosis or inhaling blood into the lungs. Are there any other signs or symptoms present? Chest x-ray, complete blood count and complete medical and physical examination is needed to help with the diagnosis.