Warts are noncancerous skin growths caused by the papillomavirus.
Warts are more common in children, although they can develop at any age. This health care information is provided as a public service by the University of Maryland Medical System, an academic medical center located in Baltimore, Maryland. The University of Maryland Medical System provides a wide range of health care services in the Baltimore metropolitan area, as well as specialized tertiary care to patients from all parts of the United States. This information is not intended to be a substitute for professional medical advice. You should not use this information to diagnose or treat a health problem or disease without consulting with a qualified health care provider.