Pneumonia is a disease which is usually difficult to identify. The symptoms of pneumonia depend largely on the age of child and the signs are recognized according to the cause of his infection. Adequate diagnosis leads to the classification of the ailment of Pneumonia. The foremost indication of the person suffering from Pneumonia will expose a cough producing greenish or yellow sputum, or phlegm and a high fever accompanied by shaking chills. Other principal symptom of the illness is shortness of breath which is also quite common sign among the persons suffering from pneumonia. Several common indications include pleuritic chest pain, a sharp or stabbing pain, either experienced during deep breaths or coughs or worsened by them.

Symptoms of pneumonia include coughing of blood, headaches, or develop sweaty and clammy skin. Other possible symptoms can be loss of appetite, fatigue, blueness of the skin, nausea, vomiting, mood swings, and joint pains or muscle aches. Diverse forms of signs and symptoms develop in a person suffering from pneumonia. The indication also takes in abdominal pain and diarrhea. In certain cases of pneumonia those which are caused by tuberculosis or Pneumocystis can also lead to weight loss and night sweats. In elderly people appearance of pneumonia is quite common. Infants also feature similar symptoms as adults or remain simply sleepy and have a decreased appetite.

Among the primary symptoms of pneumonia, the pulse is rapid, and breathing becomes shallow and painful. In addition to that shortness of breath and chest pain happens because the oxygen is not able to reach the blood properly due to inflamed lungs. Furthermore, coughs usually bring up mucus, also called sputum. The sputum may be dotted with blood or pus. Lack of oxygen makes the patients appear blue. Varied symptoms can also be detected such as tachypnea and crackles with bronchial breath sounds. Different types of pneumonia have dissimilar aspects and symptoms. People suffering from bacterial pneumonia usually start showing symptoms suddenly and often develop during or after an upper respiratory infection, for example, influenza or a cold

Symptoms of pneumonia caused by virus are often less obvious, less severe, and come on gradually. The ailment, viral pneumonia remains unrecognized because the person may not appear very ill. Bacteroides is an anaerobic bacterium which causes Pneumonia and produces dangerous abscesses in the lungs. Patients who are affected by these bacteria have prolonged fever and productive cough, frequently showing blood in the sputum.

However, the symptoms of pneumonia at times are quite dissimilar. When the pneumonia is caused in the lower part of the lungs near the abdomen, there are no breathing problems, but there may be fever and abdominal pain or vomiting. In infants, pneumonia caused due to chlamydia produces symptoms such as conjunctivitis (pinkeye) with only mild illness and no fever. Pneumonia affects an individual due to whooping cough (pertussis) also. The child have long coughing spells, turn blue from lack of air, or make a classic "whoop" sound when trying to take a breath.

Thus the typical symptoms of pneumonia can be highlighted as: