Human papillomaviruses (HPV)
Human papillomaviruses, or HPV for short, are so common that most men and women will become infected at some point in their lives – unless they have had an HPV vaccine. These infections don't usually cause any problems. But some types of HPV can cause harmless warts. And certain types increase the risk of some kinds of cancer, especially cervical cancer.
Papillomaviruses are viruses that can cause inflammation and changes in the skin. Some of them only infect humans, which is why they are called human papillomaviruses (HPV). They probably get into the skin and mucous membranes through small cuts or wounds and then multiply inside the cells. HPV is spread by direct contact with infected areas of skin or mucous membrane.