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Genital warts (or condylomata acuminata, venereal warts, anal warts and anogenital warts) are symptoms of a highly contagious sexually transmitted disease caused by some types of human papillomavirus (HPV). It is spread through direct skin-to-skin contact, usually during oral, genital, or anal sex with an infected partner. Warts are the most easily recognized symptom of genital HPV infection. Despite the fact that some types of HPV cause cervical cancer and anal cancers, these are not the same types of HPV that cause genital warts.〔(【引用サイトリンク】title=HPV and Cancer )〕 About 90% of those who contract HPV will not develop genital warts, but the remaining 10% who are infected can still transmit the virus. Although estimates of incidence vary between studies, HPV is so common that nearly all sexually active people will get it at some point in their lives.〔(【引用サイトリンク】title=Genital HPV Infection - Fact Sheet )〕 HPV types 6 and 11 are most frequently the cause of genital warts. The Gardasil vaccine includes coverage for these types. While types 6 and 11 are considered low risk for progression to cancers, it is also possible to be infected with different varieties of HPV, such as a low-risk HPV that causes warts and a high-risk HPV, either at the same or different times.〔 A condyloma acuminatum is a single genital wart, and condylomata acuminata are multiple genital warts. The word roots mean "pointed wart" (''kondylos'' Greek κονδυλος, "knuckle" + ''-oma'' Greek ωμα, "disease" = kondyloma, "knuckle-like growth"; ''acuminatum'' Latin="pointed"). ==Signs and symptoms== Genital warts may occur singly but are more often found in clusters. They may be found anywhere in the anal or genital area, and are frequently found on external surfaces of the body, including the penile shaft, scrotum, or labia majora of the vagina. They can also occur on internal surfaces like the opening to the urethra, inside the vagina, on the cervix, or in the anus. They can be as small as 1-5mm in diameter, but can also grow or spread into large masses in the genital or anal area. In some cases they look like small stalks. They may be hard ("keratinized") or soft. Their color can be variable, and sometimes they may bleed. In most cases, there are no symptoms of HPV infection other than the warts themselves. Sometimes warts may cause itching, redness, or discomfort, especially when they occur around the anus. Although they are usually without other physical symptoms, an outbreak of genital warts may cause psychological distress, such as anxiety, in some people. 抄文引用元・出典: フリー百科事典『 ウィキペディア（Wikipedia）』 ■ウィキペディアで「genital wart」の詳細全文を読む スポンサード リンク
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