ABSTRACT
References Almost everyone has either had a wart or knows someone who has had one. Human papillomaviruses (HPVs) are involved in the development of a range of diseases, from common warts to the rare epidermodysplasia verruciformis (EV).1,2 Although they are all caused by HPV infection, warts appear in many locations and show a variety of shapes and sizes.3 Still, the lesions have a characteristic appearance that often makes the diagnosis obvious to both the patient and the physician. It is the purpose of this chapter to distill the essence of these characteristics so that, with a little experience, the diagnosis of warts can be based primarily on their clinical features.
