Mycoplasmal pneumonia

  • Causative organism – Mycoplasma pneumoniae
  • Also called primary atypical pneumonia
  • Incubation period – 1-3 weeks
  • Gradual onset
  • usually tracheobronchitis, 1/3 develop pneumonia
  • usually lasts for 1-2 weeks
  • Mode of spread – droplet spread
  • favoured by close contact (famalies,  military recruits)
  • mycoplasma may persist in throat for 2 or more months after recovery

 

Clinical manifestations

  • Fever
  • headache
  • malaise
  • sorethroat
  • paroxysmal cough
  • blood tinged sputum

 

  • Findings on physical examination are minimal
  • radiography shows patchy consolidation of lower lobes – starting at hilum, fanning to periphery

 

Complications

  • myringitis bullosa, otitis – common
  • rashes
  • meningitis
  • encephalitis
  • hemolytic anemia

 

Lab diagnosis:

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