Dear Doctor: I had a rough spot on the back of my hand that turned into a wart. What caused it? How do I get rid of it?
Dear Reader: You’re describing what is known as a common wart. It’s a small, raised skin growth caused by one of the estimated 150 different varieties of the human papilloma virus, or HPV. Other types of HPV cause different kinds of warts. These include plantar warts, which are ca…