What is the cause of flat warts on the face? HPV infection

Flat warts are common among teenagers and are prone to occur on the face. Flat warts are a viral skin disease caused by infection with HPV. If you are infected with flat warts, you need to receive treatment in time, and laser or electrocautery treatment can be used if necessary.

1. Cause: HPV-3.5.8.9.10.11

Flat warts are a type of viral skin disease, medically known as "flat warts". The pathogens are similar to common warts and are caused by papillomaviruses (HPV3 and HPV5). Flat warts are skin growths that often occur on the face, back of the hands and other exposed parts of the body. They are unsightly and seriously destroy the self-confidence of people who love beauty. In addition, flat warts are easily transmitted to relatives and friends. The longer the onset of the disease, the more likely it is that flat warts will form severe pigmentation.

Second, the most susceptible population: adolescents

3. Common areas: face, back of hands and forearms, etc.

4. Characteristics of the rash: Normal skin color, light red or light brown flat papules, ranging in size from rice grains to mung beans, round or polygonal, with a smooth surface and clear boundaries. There are many rashes, often scattered or densely distributed, and autoinoculation after scratching can be seen - the rashes are arranged in a beaded shape along the scratches.

5. Subjective symptoms : Generally no subjective symptoms.

6. Course of disease : Chronic.

7. Prognosis : It may disappear on its own. There will be obvious itching before disappearance, but no trace will be left after healing.

8. Histopathology: The epidermis is hyperkeratotic, the stratum corneum is basket-shaped, the granular layer and the spinous layer are thickened, and many vacuolated cells can be seen in the upper part. The cell body is large and the nucleus is located in the center.

Prevention and treatment

1. Apply 5% 5-Fu cream, 3% peptide butylamine cream, 0.1% retinoic acid cream on the wart surface

2. Take 30g each of Atractylodes macrocephala, Cyperus rotundus, Isatis root and Sophora flavescens, decoct them in water and wash the affected area while it is still hot, or make a powder with the above ingredients and apply it to the affected area, once a day.

3. For smaller lesions, liquid nitrogen freezing, electrocautery or laser treatment can be used.