What causes flat warts on the chest?

Flat warts on the chest are mainly related to virus infection, low immunity, direct contact infection, scratching stimulation and other reasons.

1. Virus infection

flat warts are mainly caused by human papilloma virus (HPV) infection. When the skin is slightly damaged, HPV virus easily invades and infects skin cells, resulting in flat warts.

2. Low immunity

When the body's immunity is reduced, the resistance to the virus is weakened, and it is more likely to be infected with HPV virus and it is difficult to clear the infected virus, thus increasing the risk of flat warts. For example, staying up late for a long time, overwork, malnutrition, and suffering from certain chronic diseases may lead to low immunity.

3. Direct contact transmission

HPV virus can be transmitted through direct contact with the patient's warts or their used articles, etc. If there is close contact with flat wart patients, it may be infected with

the virus and get sick. Scratching stimulation

often scratches the skin of the chest, which may cause slight damage to the skin, which may not only lead to the spread of self-inoculation, bring the virus to other parts and cause new warts, but also increase the chance of infection with external viruses.