👉 Pneumonia is a condition in which the lungs become inflamed and filled with fluid. It can result from an infection, injury, or other cause that disrupts normal lung function. Pneumonia can be caused by viruses, bacteria, fungi, or other pathogens. Symptoms may include coughing up mucus, fever, difficulty breathing, chest pain, and fatigue. Treatment typically includes antibiotics to clear the lungs of the infection.
