Hemoptysis (Coughing Up Blood) - Causes, types, symptoms 

Definition: Hemoptysis refers to the expectoration (coughing up) of blood or blood-streaked mucus from the bronchi, larynx, trachea, or lungs.
Significance: Coughing up blood is always a cause for concern and requires medical attention, as it can be a sign of a serious medical condition.
Common Causes: While there are many potential causes, some of the more prevalent include bronchitis, pneumonia, tuberculosis, and lung cancer.