What is the medical term for coughing up blood?

Blood streaks mixed with mucus can follow forceful coughing or irritation during an airway infection such as Acute Bronchitis or a Common Cold. Repeated episodes can occur with Bronchiectasis, while Asthma may cause cough and airway irritation. Blood from a nosebleed or irritated gums can be mistaken for blood from the lungs. The colour, amount, frequency, and accompanying symptoms help a clinician identify the source.

Arrange prompt medical advice, especially if the bleeding returns. Note whether the blood is bright red or mixed with phlegm, how much you saw, and whether it followed vomiting, nose bleeding, or severe coughing. Avoid smoking and strenuous activity until assessed. Do not start or stop medicines that affect clotting without professional advice. A clinician may examine your nose, mouth, chest, and breathing and decide whether tests are needed.

Seek emergency help if you are coughing up more than a small streak, the bleeding does not settle, or you have breathlessness, chest pain, faintness, confusion, blue lips, or a fast worsening illness. Urgent assessment is also appropriate when haemoptysis occurs with a high fever, unexplained weight loss, or a history of lung disease. Do not drive yourself if you feel faint or short of breath.

Ask what the likely source is, whether your medicines or smoking history change the assessment, and which symptoms should prompt emergency care. Ask when to return if the cough continues and whether you need a chest examination or further testing.