Pneumonia is an inflammatory condition which affects the alveoli of the lungs. It exhibits symptoms such as chest pain, productive or dry cough, trouble breathing and fever. Pneumonia is caused due to a bacterial infection or a viral infection. It may also arise as a response to certain medications and clinical conditions such as autoimmune diseases. Vaccinations exist for certain types of pneumonia. It can be diagnosed on the basis of a physical examination and the symptoms. The diagnosis can be supported with chest X-rays, culture of the sputum and blood tests. The condition can be resolved with antibiotics, analgesics, fluids and proper rest. The situation can aggravate in the elderly or young children, especially when coupled with other medical conditions. In case of respiratory distress, hospitalization is required. This book explores all the important aspects of pneumonia in the present day scenario. It provides significant information of this condition to help develop a good understanding of its diagnosis and treatment. Those in search of information to further their knowledge will be greatly assisted by this book.