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Plantar warts are often similar to calluses or corns, but can be differentiated by close observation of skin striations. Feet are covered in friction ridges, which are akin to fingerprints of the feet. Friction ridges are disrupted by plantar warts; if the lesion is not a plantar wart, the striations continue across the top layer of the skin.
A wide variety of HPV types can cause genital warts, but types 6 and 11 together account for about 90% of all cases. [35] [36] However, in total more than 40 types of HPV are transmitted through sexual contact and can infect the skin of the anus and genitals. [4] Such infections may cause genital warts, although they may also remain asymptomatic.
Warts can also spread through fomites, or surfaces where the virus that causes warts can live for a short time, Thompson explains. Examples of fomites are towels, razors and damp shower floors.
Warts on hands are caused by an infection of the human papillomavirus (HPV). There are more than 100 different strains of HPV, according to the U.S. Food & Drug Administration. Different strains ...
Common warts – HPV types 2 and 4 (most common); also types 1, 3, 26, 29, and 57 and others. Cancers and genital dysplasia – "high-risk" HPV types are associated with cancers, notably cervical cancer , and can also cause some vulvar , vaginal , [ 11 ] penile , anal [ 12 ] and some oropharyngeal cancers .
It has also been reported from sharing of swimsuits, underwear, or bath towels, and from non-sexual touching during routine care such as diapering. Genital warts in children are less likely to be caused by HPV subtypes 6 and 11 than adults, and more likely to be caused by HPV types that cause warts elsewhere on the body ("cutaneous types").
Papillomaviridae is a family of non-enveloped DNA viruses whose members are known as papillomaviruses. [1] Several hundred species of papillomaviruses, traditionally referred to as "types", [2] have been identified infecting all carefully inspected mammals, [2] but also other vertebrates such as birds, snakes, turtles and fish.
[2] [3] It is characterized by an inability to protect against HPV infection of skin. [4] [5] HPV types 5 and 8 are detected in around 90% of skin cancers in people with EV. [1] Other types are also associated with EV. [1] In rare cases, warts may develop into giant horns resulting in treeman syndrome. [6] Prevention of skin cancer requires sun ...