Sputum that is a different color from saliva may be a sign of a lower respiratory tract infection (RTI), which affects the lungs. Examples include bacterial or viral pneumonia and bronchitis.

Medically reviewed by Anju Goel, MD Pneumonia symptoms can seem as mild as the flu, but they vary based on the cause and severity of the lung infection. Knowing the various signs and symptoms of ...

When you cough up phlegm, it's called sputum. If your sputum is green, yellow, or another color, it's likely a sign of illness.

Regular mucus tends to be thin and slippery, and it is generally a constant presence on a day-to-day basis. Meanwhile, phlegm ...

The color of this mucus can highlight the type of infection and other lung health problems. However, bronchitis is one of many conditions that can lead to excess phlegm, and while phlegm’s color ...

That's right, the color and consistency of your nasal discharge or what you cough up can shed some light on your body's immune system's responses. Here, doctors break down the meaning of your mucus ...

Your body makes phlegm, aka mucus, to sweep out harmful bacteria and allergens. The color of the phlegm can depend on the causes. Here are possible reasons why it’s brown.

If you have black phlegm or mucus, breathing in pollution or other irritants, such as cigarette smoke, may be the cause. But black mucus is also a sign of several serious or life-threatening ...

Pneumonia symptoms - Learn more about the common symptoms of pneumonia, bacterial vs. viral pneumonia symptoms, and how they differ from flu and cold symptoms.

Pneumonia in the pregnant patient is an entity that most hospitalists, internists, and pulmonologists as well as obstetricians must be comfortable in managing.

Mucus is a sticky fluid that lines your lungs, throat, mouth, nose, and sinuses and helps to protect against various infections.

What does yellow mucus mean? Yellow mucus means your body's immune system has been activated, which can change the color or consistency of your mucus, according to the Cleveland Clinic.