Fungal infection - body

Definition

Tinea corporis is a skin infection due to dermatophytes, a type of fungi.

See also:

• Tinea capitis
• Tinea cruris (jock itch)
• Tinea pedis (athlete's foot)

Alternative Names

Causes

Tinea corporis (often called ringworm

Fungi thrive in warm, moist areas. Poor hygiene, long-term wetness of the skin (such as from sweating) and minor skin and nail injuries raise your risk for a fungal infection.

Tinea corporis is contagious. You can catch the condition if you come into direct contact with someone who is infected, or if you touch contaminated items such as combs, clothing, shower floors and walls, or pool surfaces. The fungi can also be spread by pets. (Cats are common carriers).

Symptoms

Symptoms include itching and a ring-shaped, red-colored skin rash. The rash may occur on the arms, legs, face, or other exposed body areas. The border of the rash lesions look scaly.

Exams and Tests

The primary diagnosis is based on how the skin looks.

In some cases, the following tests may be done:

• KOH (potassium hydroxide) test
• Skin lesion biopsy

Treatment

Keep the skin clean and dry. Topical (applied to the skin) over-the-counter antifungal creams, such as those that contain miconazole, clotrimazole, or similar ingredients, are often effective in controlling ringworm.

Severe or chronic infection may require further treatment by the health care provider. Oral antifungal medications may be given. Stronger, prescription topical antifungal medications, such as ketoconazole may be needed. Antibiotics may be needed to treat secondary bacterial infections. Infected pets should be treated.

Outlook (Prognosis)

Ringworm usually responds to medications applied to the skin within 4 weeks. Severe or resistant cases usually respond promptly to anti-fungal medicines taken by mouth.

Possible Complications

• Secondary bacterial skin infections, cellulitis
• Spread of tinea to feet, scalp, groin, or nails
• Pyoderma, dermatophytid, or other skin disorders
• Systemic (whole body) side effects of medications (See the specific medication)

When to Contact a Medical Professional

Call for an appointment with your health care provider if ringworm does not improve with self-care.

Prevention

Good general hygiene helps prevent ringworm infections. Avoid contact with infected pets as much as possible.

Clothing and household items, such as combs and bathroom surfaces, should be cleaned and dried thoroughly before reuse or use by another person to prevent the spread of the infection. Wash the hands thoroughly after contact with any fungal infection, including contact to treat the infection.