The growth of warts is not necessarily an infection with the HPV virus. Also if there is localized friction and inflammatory stimuli, it may lead to epidermal hyperplasia, causing a wart-like appearance. HPV virus infection is the main reason for warts, warts usually appear as rough surface pimples, preferably in the neck, face, eyelids and armpits, external genitalia and other parts. The cause of the onset of viral infection, squamous epithelial cell hyperplasia, induced by local tissue protrusion, a few patients can be accompanied by itching, pain, usually no obvious self-conscious symptoms. If long-term friction or the existence of local inflammation, there will be epidermal hyperplasia, causing similar to the appearance of local warts, but not essentially warts. As in the case of pseudo-warts on the vulva of women, they are not accompanied by HPV infection. If you have warts, it is recommended that you seek medical attention.