Coughing up even a small amount of blood is almost always a bad sign and could be caused by something like pneumonia or chronic bronchitis.

Medically reviewed by Jason DelCollo, DO Key Takeaways Expectorants are medicines that thin mucus to help make coughing ...

Although mucus and phlegm are related terms, they don't mean exactly the same thing. Karl Tapales via Getty Images Most people are all too familiar with the icky, uncomfortable feeling of having mucus ...

Infections usually develop suddenly, often with fever, chills, and phlegm, and typically ... May occasionally cause small amounts of blood with severe coughing or infection. Cancer: Unexplained ...