Phlegm is mucus that can build up in your lungs and cause a cough. Several home remedies can relieve chest congestion. However, they are not cures for the infection responsible for the mucus ...

Phlegm, which the lungs produce, is very similar to mucus and may also indicate a health issue. A person will often cough up phlegm when viruses, bacteria, or unwanted — possibly cancerous ...

Bronchitis is a respiratory illness that occurs when the airways leading into your lungs get irritated, Nagata explains, which leads to the swelling and mucus buildup that causes difficulty breathing.

Bronchitis refers to inflammation in the small airways in the lungs. When the airways get inflamed, they produce mucus. Mucus helps the body flush out what it thinks is an infection, but it can ...

Feeling tired or exhausted is common, as your body fights inflammation and struggles to breathe properly due to restricted airways.