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Warts and Molluscum Contagiosum

»	What causes warts?
»	Name the common types of warts.
»	How frequently are the different cutaneous warts seen?
»	Can warts cause cancer?
»	What is epidermodysplasia verruciformis (EV)?
»	What techniques are used to study warts?
»	What techniques are used to study warts?
»	Do warts spread?
»	How long is the incubation period of warts?
»	How can warts be prevented?
»	What is the difference between the Gardasil® and Cervarix® HPV vaccines?
»	Can HPV live in the human body in a dormant state?
»	Are plantar warts caused by a special kind of virus? Are they more difficult to treat?
»	What causes the black dots within a wart?
»	Can HPV infection have a hereditary basis?
»	Are some people more susceptible to warts than others?
»	Should all warts be eradicated?
»	How should external genital warts (EGWs) be treated?
»	What methods are available for the treatment of warts?
»	What are common side effects of treatment methods?
»	What are “fairy ring” warts?
»	Should any treatments be avoided?
»	Is there a best way to treat warts?
»	How can you tell if a wart is gone?
»	How can you be sure that warts will never come back?
»	Do any warts come from toads?
»	Are molluscum contagiosum a type of wart?

What are common side effects of treatment methods?

Side effects of wart treatment. A, Painful blisters produced by cantharidin. B, Fairy ring formation of warts on the wrist, at the periphery of a blister produced by previous liquid nitrogen therapy. (Panel A courtesy of Brenda Kokomo, MD; panel B courtesy of James E. Fitzpatrick, MD.)

Fig. 26.3 Side effects of wart treatment. A, Painful blisters produced by cantharidin. B, Fairy ring formation of warts on the wrist, at the periphery of a blister produced by previous liquid nitrogen therapy. (Panel A courtesy of Brenda Kokomo, MD; panel B courtesy of James E. Fitzpatrick, MD.)

Scarring (liquid nitrogen, laser, acids, cantharidin)
Blistering (liquid nitrogen, cantharidin, topical 5-fluorouracil, bleomycin) (Fig. 26-3A)
Allergy (cantharidin, chemotherapeutic agents, tretinoin, acids, glutaraldehyde)
Persistent hyper- or hypopigmentation (liquid nitrogen)