A study published in the December issue of Arthritis Care and Research found that RA patient are nearly twice as likely to develop herpes zoster (also known as shingles) as people without RA. This large, dual country population-based study also found that people with RA who take DMARDs or oral corticosteroids seem to be at higher risk than people who take other types of arthritis drugs.

The research supports several other studies that have found similar results, but so far, none of the...