The signs and symptoms of pneumonia vary from mild to severe, depending on factors such as the type of germ causing the infection, and your age and overall health. Mild signs and symptoms often are similar to those of a cold or flu, but they last longer. Signs and symptoms of pneumonia may include:  Chest pain when you breathe or cough Confusion or changes in mental awareness (in adults age 65 and older) Cough, which may produce phlegm Fatigue Fever, sweating and shaking chills Lower than normal body temperature (in adults older than age 65 and people with weak immune systems) Nausea, vomiting or diarrhea Shortness of breath  Newborns and infants may not show any sign of the infection. Or they may vomit, have a fever and cough, appear restless or tired and without energy, or have difficulty breathing and eating. When to see a doctor See your doctor if you have difficulty breathing, chest pain, persistent fever of 102 F (39 C) or higher, or persistent cough, especially if you're coughing up pus. It's especially important that people in these high-risk groups see a doctor:  Adults older than age 65 Children younger than age 2 with signs and symptoms People with an underlying health condition or weakened immune system People receiving chemotherapy or taking medication that suppresses the immune system  For some older adults and people with heart failure or chronic lung problems, pneumonia can quickly become a life-threatening condition.
signs symptoms pneumonia vary mild severe  depending factors type germ causing infection  age health  mild signs symptoms similar cold flu  last longer  signs symptoms pneumonia may include:  chest pain breathe cough confusion changes mental awareness (in adults age 65 older) cough  may produce phlegm fatigue fever  sweating shaking chills lower normal body temperature (in adults older age 65 people weak immune systems) nausea  vomiting diarrhea shortness breath  newborns infants may show sign infection  may vomit  fever cough  restless tired energy  difficulty breathing eating  see doctor see doctor difficulty breathing  chest pain  persistent fever 102 (39 c) higher  persistent cough  especially you're coughing pus  it's especially important people high-risk groups see doctor:  adults older age 65 children younger age 2 signs symptoms people underlying health condition weakened immune system people receiving chemotherapy taking medication suppresses immune system  older adults people heart failure chronic lung problems  pneumonia can quickly life-threatening condition
pneumonia