Skip to Content
Home > Wellness > Health Library > Ehrlichiosis
Ehrlichiosis is an infectious disease that can be passed to humans
by ticks. It causes fever, chills, headache (often severe), general ill feeling
(malaise), nausea and vomiting, and a purple or red rash.
Symptoms usually start from 1 to 21 days (average of 7 days) after
the tick bite. Ehrlichiosis is usually treated with prescription
The disease most frequently occurs in the southern and
south-central United States, especially in Georgia, Missouri, and
Current as of:
November 14, 2014
William H. Blahd, Jr., MD, FACEP - Emergency Medicine & H. Michael O'Connor, MD - Emergency Medicine
How this information was developed to help you make better health decisions.
To learn more, visit Healthwise.org
© 1995-2015 Healthwise, Incorporated. Healthwise, Healthwise for every health decision, and the Healthwise logo are trademarks of Healthwise, Incorporated.
Our interactive Decision Points guide you through making key health decisions by combining medical information with your personal information.
You'll find Decision Points to help you answer questions about:
Get started learning more about your health!
Our Interactive Tools can help you make smart decisions for a healthier life. You'll find personal calculators and tools for health and fitness, lifestyle checkups, and pregnancy.
Feeling under the weather?
Use our interactive symptom checker to evaluate your symptoms and determine appropriate action or treatment.