Rigor

Rigor
ICD-10	R50.0
ICD-9	780.6

Template:Search infobox Editor-In-Chief: C. Michael Gibson, M.S., M.D. [1]

Synonyms and keywords: shaking chills

Overview

Rigor is a shaking occurring during a high fever. It occurs because cytokines and prostaglandins are released as part of an immune response and increase the set point for body temperature in the hypothalamus.

The increased set point causes the body temperature to rise (pyrexia), but also makes the patient feel cold until the new set point is reached. Rigor occurs because the patient is effectively shivering in a physiological attempt to increase body temperature to the new set point.

Causes

Common Causes

Acute cholangitis Amphotericin B Anti-TNF alpha drugs Biliary sepsis Brucellosis Catheterisation Dressler's syndrome Filariasis Gastroenteritis Generalised pustular psoriasis Gentamicin Hemodialysis Infective endocarditis Interleukin II Jarisch-Herxheimer reaction Lemierre's syndrome Louse-borne relapsing fever Lyme disease Malaria Malaria Meningococcal septicemia

Normal vaginal delvery Pericarditis Pneumonia Post bone marrow transplant Post operative infections Post radiotherapy Prostate cancer Prostatitis Pyelonephritis Pyelonephritis Rat bite fever Rheumatic fever Septic arthritis Severe acute respiratory syndrome Severe generalised rash Transfusion reaction Tuberculosis Ulcerative colitis Urinary tract infections Vancomycin Visceral abscess

Related Chapters

• rigor mortis

References

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