Pneumonia, Causes, Signs and Symptoms, Diagnosis and Treatment.

• Cough: This is the most common symptom of pneumonia, and it may produce green, yellow, or even bloody mucus.
• Fever: Many people with pneumonia have a fever, which can be as high as 105 degrees Fahrenheit (40.5 degrees Celsius).
• Chills: Pneumonia can also cause shaking chills.
• Shortness of breath: This is another common symptom of pneumonia, and it can occur even when you are resting.
• Rapid breathing: You may breathe faster than usual when you have pneumonia.
• Chest pain: Pneumonia can cause sharp or stabbing chest pain, especially when you breathe deeply or cough.
• Other symptoms: Other symptoms of pneumonia may include fatigue, loss of appetite, nausea, vomiting, and confusion.

If you have any of these symptoms, it is important to see a doctor right away. Pneumonia can be a serious illness, but it is usually treatable with antibiotics.

Here are some additional signs and symptoms of pneumonia in specific groups of people:

• Newborns and infants: Newborns and infants with pneumonia may have a fever, cough, rapid breathing, and difficulty feeding. They may also seem irritable or lethargic.
• Older adults: Older adults with pneumonia may have fewer and milder symptoms. They may even have a lower than normal temperature. Older adults with pneumonia sometimes have sudden changes in mental awareness.

If you are concerned that you or someone you know may have pneumonia, it is important to see a doctor right away.