During the winter months, mild symptoms such as coughing, congestion and sneezing are common. But, it is possible that some of these symptoms could point to a severe illness that will require medical intervention, such as pneumonia. Learn about the early symptoms of pneumonia and treatment options available for it at urgent care. Causes & Symptoms of Pneumonia Pneumonia is a serious infection that affects the lungs. It is usually caused by a bacterial infection, however ...