Common symptoms of lung infection, which usually presents with noticeable symptoms, include high fever, cough, chest pain, and shortness of breath. If these symptoms are ignored, the infection in the lungs can progress and lead to more serious complications.

Symptoms may include:

* Cough with greenish, yellow, or sometimes bloody mucus
* High fever
* Sweating and chills
* Difficulty breathing, shortness of breath
* Chest pain that occurs with breathing or coughing
* Loss of appetite
* Fatigue and weakness
* Nausea and vomiting
* Diarrhea