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

The signs and symptoms of pneumonia include chest pain, difficulty breathing, and fatigue. Pneumonia can have overlapping symptoms with colds and flus but can be life-threatening.

With pneumonia, your fever could be higher (101-105 F) and your cough may have phlegm (filled with mucus). About 5%-10% of cases of walking pneumonia turn into pneumonia.

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 ...

Sputum is a type of thick mucus produced by the lungs. This article explains the types of sputum, what causes changes, and when to speak with a doctor.

Phlegm can lead to congestion, coughing, and breathing problems. We spoke to medical experts on the causes, symptoms, and treatments of phlegm.

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.

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.

There are many reasons why a person might cough up phlegm without feeling sick. Possible causes range from allergies to acid reflux. Learn more here.

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 ...

The death of actor and leading man Val Kilmer is a stark reminder of how one of the most common lung infections in the country can turn deadly. Pneumonia causes more than a million ...