Jeffrey P. Callen, MD, a professor of medicine and chief of the division of dermatology at the University of Louisville School of Medicine in Kentucky. He is the coeditor of Dermatological Signs of Systemic Disease, the author or coauthor of more than 400 scientific papers and the recipient of the 2017 Master Dermatologist Award from the American Academy of Dermatology.
A red, itchy rash…little yellow bumps…extremely dry skin. The list of skin problems can go on and on. But did you…
