Paediatric Cutaneous Warts and Verrucae: An Update

Abstract

Cutaneous warts are common lesions in children caused by the Human Papilloma Virus (HPV) and for most lesions spontaneously resolve within months of the initial infection, regardless of treatment. The infection is most prevalent in the second decade of life affecting over 40% of children. Studies have demonstrated wart virus carriage on normal skin is higher in children with active lesions and family members. Subtypes HPV 2, HPV 27, HPV 57 and HPV 63 are particularly common in paediatric populations. Warts arising on the plantar surface of the foot (verrucae) can be particularly problematic owing to the location. They may interfere with daily activities causing pain and embarrassment. Plantar lesions have been shown to be more resistant to treatment than warts elsewhere on the skin. Systematic reviews and studies conducted over the last decade have demonstrated little evidence of innovation or effective improvements in treatment of recalcitrant lesions over the last 30 years. However, newer modalities such as immunotherapy (using injected vaccines) and hyperthermia using microwave treatment may hold promise in improving the treatment of these common and therapeutically frustrating lesions.