You may not have guessed it, but human papilloma viruses (HPV) are extremely common. Although many people associate this virus with sexually transmitted genital warts, HPV are also responsible for common warts. It is estimated that common warts can be found on the hands of about one-fourth of the U.S. population. Warts are small, painless, rounded growths that are beige, pink or brown and may have either a smooth surface or a rough surface like a cauliflower. Between 60 to 70 percent of sexually active individuals have been exposed to HPV viruses. Furthermore, HPV affects approximately six percent of women with a normal pap smear and more than 60 percent of those with an abnormal pap smear. HPV viruses have also been associated with cervical and vulvar cancer in women. However, nobody knows the long-term problems this virus might cause in men.

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