Phlegm is a slightly different substance. It's a form of mucus produced by the lower airways — not by the nose and sinuses — in response to inflammation.
Phlegm is a specific type of mucus that originates in your lungs and throat. It's slightly thicker than the mucus that's produced in your nose and sinuses.
Problems in the lungs can cause phlegm to change color. Green or yellow phlegm can occur with an infection, but brown phlegm might be a sign of bleeding in the lungs. Typically, phlegm is clear, thin, and unnoticeable. When someone has a cold or infection, the phlegm can become thickened and change color.
Chest congestion is the accumulation of mucus in the lungs and lower breathing tubes (bronchi). It is usually accompanied by a wet, productive cough that brings up thick mucus. Chest congestion may cause you to hear or feel wheezing or crackling sounds when you breathe in and out.
More than just an unpleasant nuisance, mucus that collects in your airways can make breathing more difficult and increase your risk of infection, which can further damage your lungs. Living with a chronic lung disease means you are likely experiencing an excess of this thick and sticky fluid in your lungs.
Does coughing up mucus mean you're getting better? In most cases, coughing up mucus means your body is working to fight off an infection, and it is in the healing stages. Drink plenty of fluids to help thin the mucus.
Common symptoms of pneumonia include: a cough – which may be dry, or produce thick yellow, green, brown or blood-stained mucus (phlegm)
So, to answer your questions: The phlegm itself isn't toxic or harmful to swallow. Once swallowed, it's digested and absorbed. It isn't recycled intact; your body makes more in the lungs, nose and sinuses. It doesn't prolong your illness or lead to infection or complications in other parts of your body.
Dozens of conditions can cause a recurrent, lingering cough, but the lion's share are caused by just five: postnasal drip, asthma, gastroesophageal reflux disease (GERD), chronic bronchitis, and treatment with ACE inhibitors, used for high blood pressure and heart failure.
In certain patients, however, the infection can result in lower respiratory symptoms such as cough and chest congestion, eventually turning into bronchitis, sometimes even pneumonia. This typically occurs from infected post nasal drainage entering the lungs.
However, when you lie flat on your back at night post nasal drip can actually seep around the epiglottis, exposing your lungs to the bacteria in the mucus. Pneumonia (an infection in your lungs) and bronchitis (irritation of the bronchial tubes in your lungs) could develop.
These results strongly suggest that entrance of postnasal drip into the trachea and the lungs may be owing to host conditions, such as whether the host is asleep or awake, and thicker viscous postnasal drip may easily enter the respiratory organs.
Acute sinusitis signs and symptoms often include: Thick, yellow or greenish mucus from the nose (runny nose) or down the back of the throat (postnasal drainage) Blocked or stuffy nose (congestion) causing difficulty breathing through your nose.
[coughing] Breathe in slowly and gently through your nose, and repeat the coughing if you need to. So when it's hard to breathe because of mucus in your lungs, you have three things you can do to help move the mucus out: postural drainage, chest percussion, and controlled coughing.
Conditions that can contribute to excess mucus include allergies, asthma, and bronchitis. Smoking and conditions like COPD and cystic fibrosis can also cause this symptom. Your doctor may order a sputum test to find the cause of your excess mucus.
These symptoms can be unpleasant, but they usually get better on their own in about 7 to 10 days. The cough and mucus can last up to 3 weeks.
Postnasal drip refers to excess mucus that someone may feel in the back of the nose and throat, causing a constant need to clear the throat. It may lead to symptoms, such as a sore throat and trouble swallowing. Environmental triggers, such as allergies, cold weather, or dry air, may cause postnasal drip.
Mucus and phlegm are similar, yet different: Mucus is a thinner secretion from your nose and sinuses. Phlegm is thicker and is made by your throat and lungs.
Sputum may be referred to as phlegm or mucus. All terms are correct, but sputum and phlegm only refer to the mucus made in the respiratory system (lungs and airways). Sputum (phlegm) is a type of mucus. Mucus can also be made elsewhere in the body, such as the urinary or genital tract.