A lung infection is an inflammatory condition affecting the air sacs (alveoli) or airways of the lungs, typically caused by bacteria, viruses, or fungi. This inflammation can lead to the accumulation of fluid or pus in the air sacs, making it difficult for oxygen to enter the bloodstream. The most common type of lung infection, often stemming from infections in the upper or lower respiratory tract, is pneumonia. Other significant lung infections include bronchitis, which involves the infection of the bronchial tubes that carry air to the lungs.
Lung infections can present with various symptoms that disrupt daily life and, if left untreated, may lead to serious complications, potentially becoming life-threatening. Therefore, it is crucial to take symptoms seriously and consult a doctor promptly for proper diagnosis and treatment.