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Risk Factors for Shingles
by Rosalyn Carson-DeWitt, MD
You can only get shingles if you already had chickenpox and the dormant virus from the chickenpox infection becomes reactivated. Since only 20% of people who have had chickenpox develop shingles, researchers are still trying to determine what makes some people more likely to develop shingles than others.
Some of the factors that make people more likely to develop shingles include:
If you have a weakened immune system, you are more likely to develop shingles. Conditions that increase your risk include:
Medications and Procedures
Certain procedures and medications may increase your risk, such as:
People over age 60 are more likely to develop shingles than younger people.
Ethnic Background TOP
Caucasian people are more likely than African Americans to develop shingles.
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Shingles (herpes zoster). Centers for Disease Control and Prevention website. Available at:
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Updated January 10, 2011. Accessed May 30, 2013.
6/9/2014 DynaMed Plus Systematic Literature Surveillance. http://www.dynamed.com/topics/dmp~AN~T113997/Herpes-zoster: Forbes H, Bhaskaran K, Thomas SL, Smeeth L, Clayton T, Langan SM. Quantification of risk factors for herpes zoster: population based case-control study. BMJ 2014;348:g2911.
Last reviewed June 2016 by James Cornell, MD
Last Updated: 5/20/2015
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