The disease is caused by human papillomavirus (HPV) infection and is most prevalent in adolescents. Human papillomavirus is a virus of the human body and belongs to the genus Papillomavirus in the family Papillomaviridae. There are several reasons for this virus infection: 1. The virus is contagious and can be transmitted through direct contact, or indirectly through contaminated artifacts infected with damaged skin, such as needles, brushes, towels, etc.
2, low resistance is an important reason, when the human body cold, fever, excessive fatigue and other cases of latent warts virus in the body can suddenly onset, there are more warts rash. Patients suffering from autoimmune diseases are prone to induce this disease.
3, Chinese medicine think that the skin coup is not dense, wind heat evil poison invade the body, or body liver deficiency blood dry, tendons and gas is not honored, heat poison outside the accumulation of skin and disease.
The typical symptoms of flat warts are rice grain to soybean size flat elevated papule, round or oval, the surface is smooth, hard, normal skin color or light brown, more suddenly appear, the number of more and dense. The lesions may be arranged in a beaded pattern after scratching. The disease is chronic and has the highest rate of self-resolution in all clinical types of HPV infection, with recurrence in a few patients.