An infection of the lungs or the airways that connect the windpipe to the lungs.

Chest infections can be caused by viruses, bacteria or fungi. Many infections are mild. Others are serious or life-threatening. Examples of chest infections include pneumonia and bronchitis.

Chest infection symptoms depend on the cause. Symptoms can include a cough that may bring up green or yellow mucus, wheezing, shortness of breath, chest pain, a high temperature, fever, head or muscle aches, and tiredness.

Treatment for a mild chest infection can include getting rest, drinking hot tea or water, and taking pain medicines sold without a prescription. Treatment for a serious infection depends on the cause. For instance, chest infections caused by bacteria can be treated with antibiotics.