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Pneumonia is inflammation and fluid in your lungs caused by a bacterial, viral or fungal infection. Treatment depends on the cause and severity of pneumonia.

Symptoms of bacterial pneumonia

Symptoms of bacterial pneumonia can develop gradually or suddenly. Symptoms include:
 
-High fever (up to 105 F or 40.55 C).
-Cough with yellow, green or bloody mucus.
-Tiredness (fatigue).
-Rapid breathing.
-Shortness of breath.
-Rapid heart rate.
-Sweating or chills.
-Chest pain and/or abdominal pain, especially with coughing or deep breathing.
-Loss of appetite.
-Bluish skin, lips or nails (cyanosis).
-Confusion or altered mental state.

Symptoms of viral pneumonia

Symptoms of viral pneumonia usually develop over several days. You might have symptoms similar to bacterial pneumonia or you might additionally have:
 
-Dry cough.
-Headache.
-Muscle pain.
-Extreme tiredness or weakness.

Symptoms of pneumonia in young children

Babies and newborns may not show any symptoms of pneumonia or their symptoms may be different from adults, including:
 
-Fever, chills, general discomfort, sweating/flushed skin.
-Cough.
-Difficulty breathing or rapid breathing (tachypnea).
-Loss of appetite.
-Vomiting.
-Lack of energy.
-Restlessness or fussiness.
 
Signs you can look for in babies and young children include:
 
-Grunting sound with breathing or noisy breathing.
-A decreased amount of pee or diapers that are less wet.
-Pale skin.
-Limpness.
-Crying more than usual.
-Difficulty feeding.

Symptoms of pneumonia in adults over 65

Adults over 65 or those with weakened immune systems may have mild or less noticeable symptoms of pneumonia (like cough and shortness of breath). Symptoms of ongoing health conditions may worsen. Older adults may experience:
 
-A sudden change in mental state.
-Low appetite.
-Fatigue.

المضاعفات

Most people with pneumonia respond well to treatment, but pneumonia can be very serious and even deadly.
 
When you get pneumonia whether it comes from bacteria, a virus, or a fungus there’s a chance it could lead to other medical troubles.
 
You are more likely to have complications if you are an older adult, a very young child, have a weakened immune system, or have a serious medical problem like diabetes or cirrhosis. Complications may include:
 
*Acute respiratory distress syndrome (ARDS). This is a severe form of respiratory failure.
 
*Lung abscesses. These are pockets of pus that form inside or around the lung. They may need to be drained with surgery
 
*Respiratory failure. This requires the use of a breathing machine or ventilator.
 
*Sepsis. This is when the infection gets into the blood. It may lead to organ failure.

When to see a doctor

Especially if you’ve been sick or have an underlying health condition, call your doctor if you have new or worsening:
 
-Shortness of breath.
-Fever or cough with mucus.
-Tiredness (fatigue).
-Have a change in appetite (you feel less hungry).
المصادر والمراجع
 
https://www.webmd.com/lung/complications-pneumonia
https://www.hopkinsmedicine.org/health/conditions-and-diseases/pneumonia
https://my.clevelandclinic.org/health/diseases/4471-pneumonia
https://www.lung.org/lung-health-diseases/lung-disease-lookup/pneumonia/symptoms-and-diagnosis
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