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Shaking Chills (Rigors)


Shaking chills (rigors) are the body's reaction to a severe infection or the release of organisms, such as viruses or bacteria, into the bloodstream. These chills often occur with a high fever and sometimes make teeth chatter or, when severe, can cause uncontrollable shaking that can make a bed vibrate.

ByHealthwise Staff
Primary Medical ReviewerWilliam H. Blahd, Jr., MD, FACEP - Emergency Medicine
Specialist Medical ReviewerH. Michael O'Connor, MD - Emergency Medicine
Last RevisedSeptember 13, 2012

eMedicineHealth Medical Reference from Healthwise

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