You may also cough up mucus tinged with blood, which can be mostly clear, yellow, or green in appearance. Coughing up blood can occur in small or large amounts. In most cases, the amount of blood ...

The symptoms can include coughing up thick yellow, green, or brown phlegm. Seek medical attention if you think you have ...

When a metallic taste is paired with coughing, you may have an upper respiratory infection like a cold. This can cause your phlegm to contain traces of blood. Repeatedly coughing up phlegm often ...

You may cough up blood-stained phlegm that is thick and dry in consistency. This phlegm may be yellow, green, or brown in color. How to treat it: Some cases of pneumonia can go away on their own ...