Differential diagnosis of pediatric non-bacterial / non-viral pneumonia

• Chlamydia pneumonia
• Mycoplasma pneumonia

Approach to the differential diagnosis of non-bacterial / non-viral pneumonia:

• Chlamydia pneumonia should be suspected in a 1-2 month old with diffuse interstitial infiltrates, and can be difficult to distinguish radiographically from viral pneumonia
• Mycoplasma pneumonia should be suspected in school agers and teenagers, and it can mimic viral pneumonia or bacterial pneumonia radiographically