HPV
Source: MedlinePlus Health Topics, U.S. National Library of Medicine
What is HPV? Human papillomavirus (HPV) is a group of more than 200 related viruses. Some of them are spread through sexual contact. Most people have been exposed to HPV. Usually, your immune system controls HPV infections, and they go away on their own and don't cause any health problems, but some need treatment. There are two categories of sexually transmitted HPV. They are called low-risk HPV and high-risk HPV. Sometimes high-risk HPV infections can stay at the cervix (the lower part of a woman's uterus) for many years. This can lead to cell changes. If these changes are not screened for and treated, they may get worse over time and become cancer. Low-risk HPVM can cause warts on or around your genitals , anus, mouth, or throat. High-risk HPV can cause various cancers: Cervical cancer Anal cancer Oropharyngeal cancer, a type of head and neck cancer, also called throat cancer Vulvar cancer Vaginal cancer Penile cancer Who is at risk for HPV infections? HPV infections are very common. Nearly all sexually active people are infected with HPV soon after they become sexually active. What are the symptoms of HPV infections? Some people get warts from certain low-risk HPV infections, but the other types (including the high-risk types) have no symptoms. If a high-risk HPV infection lasts for many years and causes cell changes, you may have symptoms. You may also have symptoms if those cell changes develop into cancer. Which symptoms you have depends on which part of your body is affected. How are HPV infections diagnosed? Health care providers can usually find out if you have warts by looking at them. Nearly all cervical cancers are caused by a long-lasting infection with a high-risk type of HPV. Screening can prevent cancer by finding out if you need treatment for changes that might happen before cancer, called precancer. Screening tests for HPV can include: For women, there are cervical cancer screening tests that can find changes in the cervix that might lead to cancer
