Pneumonia, an infectious disease, causes inflammation of the lungs. One of the most dangerous diseases, pneumonia is threatening if both the lungs of the ailing person get affected. This condition is termed as double pneumonia. Some of the causes of pneumonia are bronchiectasis, excessive smoking, chronic alcohol misuse, intravenous drug misuse, weakened immune system, cystic fibrosis and lung cancer. The real cause of pneumonia is the weakened immune system of the body, a result of the toxins present in the air passages and lungs. Chest pain, fever, chills, leucocytosis, cough, labored breathing, fatigue, anorexia, headache and bloody sputum are some of the symptoms of pneumonia. However, pneumonia can be treated using home remedies, some of which have been listed below.