Verruca

A verruca is a type of viral infection that affects the skin on the feet, also known as a plantar wart. It is caused by the human papillomavirus (HPV) and is highly contagious.

Causes and Risk Factors

• The virus that causes verruca is spread through direct contact with an infected person or contaminated surfaces, such as floors and towels.
• People who walk barefoot in public areas, share personal care items, or have weakened immune systems are at higher risk of developing a verruca.

Symptoms

• A small, rough, or flat growth on the skin, usually on the sole or heel of the foot.
• Pain or tenderness when walking or applying pressure to the affected area.
• Black dots or streaks in the center of the growth, which are actually small blood vessels.

Diagnosis

A doctor can diagnose a verruca by visually examining the affected area and taking a medical history. In some cases, a biopsy may be performed to rule out other conditions.

Treatment Options

• Cryotherapy: freezing the wart using liquid nitrogen to kill the virus and destroy the infected tissue.
• Salicylic acid: applying a topical treatment to dissolve the keratin protein that makes up the wart.
• Cantharidin: applying a blistering agent to the wart, which will eventually fall off.
• Surgical removal: in severe cases, the wart may need to be surgically removed.

Prevention

• Wear shoes or sandals in public areas to reduce the risk of coming into contact with the virus.
• Avoid sharing personal care items, such as towels and razors.
• Keep the feet clean and dry, and change socks regularly.

Complications

If left untreated, a verruca can cause persistent pain and discomfort, and may also lead to the development of additional warts. In rare cases, the virus can spread to other parts of the body or to other people.