<unk> s are typically small, rough, hard growths that are similar in color to the rest of the skin. They typically do not result in other symptoms, except when on the bottom of the feet, where they may be painful. While they usually occur on the hands and feet, they can also affect other locations. One or many<unk> s may appear. They are not cancerous.<unk> s are caused by infection with a type of human papillomavirus (HPV). Factors that increase the risk include use of public showers and pools, working with meat, eczema and a weak immune system. The virus is believed to enter the body through skin that has been damaged slightly. A number of types exist, including "common<unk> s", plantar<unk> s, "filiform<unk> s", and genital<unk> s. Genital<unk> s are often sexually transmitted. Without treatment, most types of<unk> s resolve in months to years. A number of treatments may speed resolution including salicylic acid applied to the skin and cryotherapy. In those who are otherwise healthy, they do not typically result in significant problems. Treatment of genital<unk> s differs from that of other types.<unk> s are very common, with most people being infected at some point in their lives. The estimated current rate of non-genital<unk> s among the general population is 1–13%. They are more common among young people. The estimated rate of genital<unk> s in sexually active women is 12%.<unk> s have been described at least as far back as 400 BC by Hippocrates.
Wart
Callus
Whitlow
Seborrheic keratosis
Drustbed
Squamous cell carcinoma
Flashblood
Squamous cell skin cancer