Chills, Fatigue, Nausea, Rash: 4 Possible Causes
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What is causing your symptoms? 4 possible conditions

See a list of possible causes in order from the most common to the least.


Infectious Mononucleosis

Infectious mononucleosis, or mono, refers to a group of symptoms usually caused by the Epstein-Barr virus (EBV).

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Addisonian Crisis (Acute Adrenal Crisis)

This condition is considered a medical emergency. Urgent care may be required.

An Addisonian crisis occurs when levels of cortisol suddenly drop. Learn more about an Addisonian crisis, including symptoms, risk factors, and treatment.

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Colorado Tick Fever

Colorado tick fever is a viral infection transmitted through a bite from an infected tick. Learn about Colorado tick fever symptoms, diagnosis, and treatment.

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Transfusion Reactions

A transfusion reaction is when your body has an adverse response to a blood transfusion. Learn how transfusion reactions occur and how to minimize your risk.

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This feature is for informational purposes only and should not be used to diagnose.
Please consult a healthcare professional if you have health concerns.