Tick exposure is often overlooked. For patients living in high-prevalence areas who spend time outdoors, a high degree of clinical suspicion should be employed. Ehrlichia serologies can be negative in the acute period. Polymerase chain reaction is therefore the laboratory diagnostic tool of choice.
Human monocytotropic ehrlichiosis
Toxoplasmosis
African histoplasmosis
Brazilian purpuric fever
Ehrlichiosis
Adult-onset Still's disease
Zygomycosis
Psittacosis