Doctors warn this condition can be extremely painful — but there are a few steps you can take to reduce your risk. You probably know someone ― whether a parent, sibling, uncle, friend or even yourself ― who has come down with the blistering rash known as shingles. Roughly one-third of American adults, specifically those over 50, will develop shingles. “Shingles is a painful skin infection,” said Dr. Joyce Chen , a primary care physician at Rush University Medical Center in Chicago. “It is