The symptoms will usually depend on the cause of the pneumonia, however, a productive cough, chest pain, fever or chills and difficulty breathing or breathlessness, are all common symptoms of pneumonia.
In bacterial pneumonia, the symptoms can appear suddenly and be very severe or may appear more gradually. The symptoms include:
Doctors believe about half of all pneumonias are caused by viruses. Most viral pneumonias are not serious and only last for a short time, but the influenza (flu) virus can cause serious pneumonia in the elderly or people with impaired immunity. In some cases viral pneumonia may be complicated by a bacterial infection and show the symptoms of bacterial pneumonia. Symptoms of viral pneumonia can be similar to an attack of flu and include:
The symptoms can sometimes lead to a rapid deterioration in condition, with extreme breathlessness, and a desperate need for air, developing.
This is the most widespread form of pneumonia in people aged under 40. It often occurs as an epidemic in confined groups such as families, students and military personnel. It is usually a mild pneumonia, but can be severe. Sometimes cough and weakness can go on for a few weeks if it’s not treated.
Common symptoms include:
Last Reviewed: 11 August 2006