what is pnemonia

Pneumonia is a lung infection that causes inflammation and fluid build-up in the air sacs of one or both lungs. It can be caused by bacteria, viruses, fungi, or chemical irritants. The symptoms of pneumonia include cough, fever, sweating, shaking chills, shortness of breath, chest pain, fatigue, and muscle aches. Pneumonia can affect anyone, but children who are 2 years old or younger and people who are age 65 or older are at the highest risk. Other risk factors include being hospitalized, having a weakened immune system, having a chronic lung disease, and smoking. Pneumonia can be prevented by getting vaccinated, practicing good hygiene, and avoiding smoking and exposure to pollutants. Treatment for pneumonia depends on the cause and severity of the infection, but may include antibiotics, antiviral medications, and supportive care such as oxygen therapy and fluids.