Common symptoms alt=Illustration of pneumonia symptoms on a human body * Coughing which produces greenish or yellow sputum * A high fever, accompanied by sweating, chills and shivering * Sharp, stabbing chest pains * Rapid, shallow, often painful breathing Less-common symptoms * Coughing up blood (hemoptysis) * Headaches, including migraines * Loss of appetite * Excessive fatigue * Bluish skin (cyanosis) * Nausea * Vomiting * Diarrhea * Joint pain (arthralgia) * Muscle aches (myalgia) * Rapid heartbeat * Dizziness or lightheadedness In the elderly * New or worsening confusion * Hypothermia * Poor coordination, which may lead to falls In infants * Unusual sleepiness * Yellowing of the skin (jaundice) * Difficulty feeding Complications Major complications of<unk>  include: * Sepsis - A life-threatening reaction to infection. A common cause of sepsis is bacterial pneumonia, frequently the result of infection with streptococcus pneumoniae. Patients with sepsis require intensive care with blood pressure monitoring and support against hypotension. Sepsis can cause liver, kidney and heart damage. * Respiratory failure -<unk>  patients often have dyspnea, which may require support. Non-invasive machines (such as bilevel positive airway pressure), a tracheal tube or a ventilator may be used. * Pleural effusion and empyema - Microorganisms from the lung may trigger fluid collection in the pleural cavity, or empyema. Pleural fluid, if present, should be collected with a needle and examined. Depending on the results, complete drainage of the fluid with a chest tube may be necessary to prevent proliferation of the infection. Antibiotics, which do not penetrate the pleural cavity well, are less effective. * Abscess - A pocket of fluid and bacteria may appear on X-ray as a cavity in the lung. Abscesses, typical of aspiration pneumonia, usually contain a mixture of anaerobic bacteria. Although antibiotics can usually cure abscesses, sometimes they require drainage by a surgeon or radiologist.
Community-acquired pneumonia
Hospital-acquired pneumonia
Pneumococcal pneumonia
Bacterial pneumonia
Fungal pneumonia
Idiopathic pneumonia syndrome
Ventilator-associated pneumonia
Hantavirus pulmonary syndrome