Severe pneumonia is a serious lung infection that can cause significant breathing difficulties. It occurs when the air sacs in the lungs fill with fluid or pus, leading to symptoms such as high fever, cough, and chest pain. This condition can be caused by various pathogens, including bacteria, viruses, and fungi, and may require hospitalization for treatment. Individuals with severe pneumonia may need antibiotics or antiviral medications, depending on the cause. In some cases, they may require supplemental oxygen or mechanical ventilation to help them breathe. Early diagnosis and treatment are crucial to prevent complications and improve recovery outcomes.