Bronchopneumonia is a type of lung infection that primarily affects the bronchi and surrounding alveoli. It is often caused by bacteria, viruses, or fungi, leading to inflammation and fluid accumulation in the lungs. Symptoms may include cough, fever, chest pain, and difficulty breathing. This condition can occur in people of all ages but is more common in young children and the elderly. Diagnosis typically involves a physical examination, chest X-rays, and sometimes sputum tests. Treatment usually includes antibiotics for bacterial infections and supportive care to help ease symptoms.