Human monocytotropic ehrlichiosis

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Human monocytotropic ehrlichiosis
Micrograph of Ehrlichia chaffeensis in a monocyte
Synonyms	Human monocytic ehrlichiosis
Pronounce	N/A
Specialty	N/A
Symptoms	Fever, headache, malaise, muscle pain
Complications	Meningitis, respiratory failure, septic shock
Onset	1 to 2 weeks after tick bite
Duration	Variable
Types	N/A
Causes	Ehrlichia chaffeensis
Risks	Tick exposure, outdoor activities
Diagnosis	Serology, PCR
Differential diagnosis	Rocky Mountain spotted fever, anaplasmosis, leptospirosis
Prevention	Tick bite prevention, protective clothing
Treatment	Doxycycline
Medication	Doxycycline
Prognosis	Generally good with treatment
Frequency	Rare
Deaths	Rare, but possible if untreated

Human Monocytotropic Ehrlichiosis is a tick-borne disease caused by the bacterium Ehrlichia chaffeensis. This disease is primarily transmitted to humans by the Lone Star tick (Amblyomma americanum).

Symptoms

The symptoms of Human Monocytotropic Ehrlichiosis typically appear within 1-2 weeks following the bite of an infected tick. Symptoms can include:

• Fever
• Headache
• Muscle aches
• Chills
• Nausea
• Confusion
• Rash (occurs in approximately 30% of adults and up to 60% of children)

Diagnosis

Diagnosis of Human Monocytotropic Ehrlichiosis is based on clinical signs and symptoms, and can later be confirmed with specialized confirmatory laboratory tests. Treatment should never be delayed pending the receipt of laboratory test results, or be withheld on the basis of an initial negative laboratory result.

Treatment

The treatment of choice for Human Monocytotropic Ehrlichiosis is Doxycycline. Doxycycline is most effective at preventing severe complications from the disease if it is started early in the course of illness.

Prevention

Prevention of Human Monocytotropic Ehrlichiosis primarily involves avoiding areas where ticks are found and using insect repellents.

See Also

• Tick-borne diseases
• Ehrlichia chaffeensis
• Lone Star tick
• Doxycycline

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