The symptoms of lung hemorrhage vary depending on the severity and amount of bleeding. However, the most common symptom is coughing up frothy blood from the mouth. Furthermore, the underlying causes leading to the bleeding may also present with their specific symptoms. For instance, in the presence of a tumor, weight loss, chronic cough, and shortness of breath may be observed, whereas in infections, high fever, difficulty breathing, and cough are frequently encountered symptoms. Generally, the severity and type of symptoms will vary according to the amount of bleeding and the underlying cause.