Warts occur worldwide. The virus is transmitted by direct contact with skin lesions or contaminated floors and instruments. Warts may also be autoinoculated. Common warts are most frequently seen in children and rarely in the elderly. Genital warts are most common in young adults who are sexually active. Plantar warts are most often seen in teenagers and school age children.

Prevention
Prevention is by the avoidance of direct contact with lesions or skin contact with contaminated floors. The use of a condom may reduce transmission of genital warts.

Treatment
Warts will usually spontaneously regress within 1-2 years. Recurrence occurs in about 35% of patients. Treatment, if necessary, is by freezing, laser therapy, surgical removal, or salicylic and lactic acid plasters. Flat warts have been successfully treated with retinoic acid cream (0.05%) and oral retinoids are reportedly effective in cases of extensive warts. Topical fluorouracil (1% or 5%) is sometimes used as well. Scarring should be avoided. No current treatment can guarantee a remission or prevent recurrence.

Home remedies or treatments may include the use of a pumice stone to remove the callus, but not to the point of irritation. Cutting the wart with a razor is not recommended because of the risk of transmission and autoinfection. Warm water soaks (45 C) for 30 minutes daily for six weeks may be helpful in some cases. Keratolytic agents (salicylic acid) can be used at home and are usually effective and painless. They must be applied daily for 8-12 weeks.
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