Psittacosis differential diagnosis

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Editor-In-Chief: C. Michael Gibson, M.S., M.D. [1]; Associate Editor(s)-in-Chief: Aditya Govindavarjhulla, M.B.B.S. [2]

Overview

Differential diagnosis must be made with typhus, typhoid and atypical pneumonia by Mycoplasma, Legionella or Q fever. Exposure history is paramout to diagnosis.

Differentiating Psittacosis from other Disease

Psittacosis presents with a clinical picture similar to other disease like:

• Typhus fever
• Mycoplasma
• Q fever
• Legionella

Psittacosis can be differentiated with following features:

• History of exposure to parrots
• Contact with sick birds
• History of bird bites

Specific laboratory tests may be useful

• Serology - high titers of IgM are against the diagnosis of psittacosis
• Monoclonal antibody test

References

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