Pneumonia is a serious lung infection that inflames the air sacs (alveoli). Pneumonia can be caused by bacteria, viruses, or fungi and is often categorized as community-acquired pneumonia (CAP), hospital-acquired pneumonia (HAP), or aspiration pneumonia. It is typically characterized by inflammation of the air sacs in the lungs, which can fill with fluid or pus, making it difficult to breathe and leading to symptoms such as cough, fever, fatigue, and chest pain. Pneumonia Doctors in Homeopathy Treatment specialize in holistic care. While pneumonia can strike anyone, it’s most dangerous for infants, young children, older adults, and those with weakened immune systems.