Tinea Corporis

Tinea corporis, also known as ringworm of the body, is a fungal infection that affects the skin on various parts of the body, excluding the areas of the feet, groin, face, scalp, and hands.

Causes and Risk Factors

Tinea corporis is caused by a group of fungi called dermatophytes, which include species such as Trichophyton, Microsporum, and Epidermophyton. These fungi thrive in warm, moist environments and can be spread through direct contact with an infected person or contaminated objects.

Symptoms

The symptoms of tinea corporis typically begin within 10 to 14 days after exposure to the fungus and may include:

• Red, circular patches on the skin that may be raised or flat
• Patches that are often itchy, scaly, and inflamed
• A clear center, giving the appearance of a ring (hence the name "ringworm")
• Multiple patches may appear on different parts of the body

Diagnosis

Tinea corporis is typically diagnosed based on a physical examination and medical history. A healthcare provider may also perform the following tests to confirm the diagnosis:

• KOH (potassium hydroxide) test: a sample of skin scrapings or hair is treated with KOH to dissolve the skin cells, making it easier to see the fungal elements under a microscope
• Fungal culture: a sample of skin scrapings or hair is sent to a laboratory to grow the fungus and identify the specific type

Treatment

Treatment for tinea corporis typically involves topical antifungal medications, such as:

• Clotrimazole (Lotrimin)
• Miconazole (Micatin)
• Terbinafine (Lamisil)

In more severe cases or if the infection is widespread, oral antifungal medications may be prescribed.

Prevention

To prevent tinea corporis, it is essential to:

• Practice good hygiene and keep the skin clean and dry
• Avoid sharing personal items, such as towels or clothing
• Wear loose-fitting clothing to reduce moisture buildup
• Avoid walking barefoot in public areas, such as locker rooms or swimming pools

Complications

If left untreated, tinea corporis can lead to complications, such as:

• Bacterial infections, which can cause increased redness, swelling, and pus
• Fungal infections in other parts of the body, such as the nails or scalp