Icterus (medicine)

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Icterus, in medicine, is the yellow discoloration of skin and mucus membranes in jaundice.

As a rule of thumb, icteric sclera indicates a direct bilirubin of at least 2 mg%, icteric sublingual membrane indicates a bilirubin of 5 mg%, and icteric tympanic membranes indicate a bilirubin of at least 10. Hemolytic anemia does not normally produce a bilirubin of greater than about 3, so if the mucus membrane under the tongue is yellow, suspect biliary or hepatic disease.

[edit] References

    J Wiese Clinical Clerkships — The Answer Book. Lippencott, Williams, and Wilkins; 2006, p 167.

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