History and exam
Other diagnostic factors
common
overcrowding (risk factor)
Outbreaks of pneumonia due to Chlamydia pneumoniae have been observed in military recruits and nursing homes.[5]
illness in other family members
Spread can occur in families.
cough
Nonspecific; may be nonproductive.
fever
Nonspecific sign.
headache
Nonspecific symptom.
rales
Consistent with pneumonia.
wheezes on chest auscultation
Common, but not diagnostic.
tachypnea
Variable, dependent on extent of lung involvement.
uncommon
pleuritic chest pain
May occur with inspiration or cough.
dullness to percussion/reduced air entry/decreased tactile fremitus
May suggest pleural effusion.
Risk factors
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