Warts are benign tumors most often caused by a virus that develops on the outer skin layer.
Warts are non-cancerous growths which can develop at any age, but are more commonly found on children and young adults. The size and shape of an individual wart is entirely dependent on the particular type of wart and its location of growth. Although each type of wart has distinct characteristics, all warts have similar patterns and appearances, which help to distinguish them from other growths and conditions. Growths with rough surfaces. Growths with clearly defined borders.