PSI Barbering Practice Exam 2026 – 400 Free Practice Questions to Pass the Exam

Question: 1 / 580

Which of the following is caused by a virus and is infectious?

Corn

Callus

Wart

The correct answer is indeed wart. Warts are benign growths on the skin caused by the human papillomavirus (HPV). This virus is contagious and can be transmitted through direct contact with warts or surfaces contaminated by the virus, such as gym floors or swimming pools. Once the virus enters the skin, it prompts the skin cells to grow rapidly, leading to the formation of a wart.

In contrast, corn and calluses are thickened layers of skin that develop in response to friction and pressure; they are not caused by viruses and are not infectious. Basal cell carcinoma is a type of skin cancer that arises from the basal cells in the skin and is not caused by an infectious agent like a virus. Therefore, wart stands out as the only option associated with a viral cause and being infectious.

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Basal cell carcinoma

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