Why does ringworm occur




















Ringworm can affect the skin on your: Beard, tinea barbae Body, tinea corporis Feet, tinea pedis also called athlete's foot Groin area, tinea cruris also called jock itch Scalp, tinea capitis. Alternative Names. Dermatophytid; Dermatophyte fungal infection - tinea; Tinea. Dermatitis - reaction to tinea Ringworm - tinea corporis on an infant's leg Ringworm, tinea capitis - close-up Ringworm - tinea on the hand and leg Ringworm - tinea manuum on the finger Ringworm - tinea corporis on the leg Tinea ringworm.

Tinea Infections Read more. Health Topics A-Z Read more. Symptoms include itching, and red to brownish-gray patches on the skin. HIV human immunodeficiency virus is a virus that attacks the immune system, making you more vulnerable to other infections and diseases including ringworm. Symptoms, Causes, Diagnosis, Treatment, Prevention. Symptoms, Causes, Diagnosis, Treatment, and Prevention. Centers for Disease Control and Prevention.

The CDC is the nation's health protection agency. Their website offers information about the symptoms, diagnosis, treatment, and prevention of ringworm. American Academy of Dermatology. The AAD is the largest dermatological association, with a membership of more than 20, physicians worldwide. Their website provides information about the symptoms, causes, and treatment of ringworm, along with self-care tips.

Mayo Clinic. Mayo Clinic is a nonprofit organization that performs clinical practice, education, and research. Their website offers information about symptoms, causes, diagnosis, and treatment of ringworm. By subscribing you agree to the Terms of Use and Privacy Policy. Health Topics. Health Tools. Reviewed: August 21, Medically Reviewed. Types of ringworm include: Tinea pedis Athlete's foot ringworm on the feet Tinea cruris Jock itch ringworm on the groin, inner thighs, and buttocks Tinea barbae Ringworm on the beard area Tinea manuum Ringworm on the hands Tinea capitis Ringworm on the scalp Tinea unguium Onychomycosis ringworm on the fingernails and toenails Tinea corporis Ringworm on other parts of the body, such as the arms or legs.

The soles and heels of the feet may also be affected. In severe cases, blistering of the feet can occur. Tinea cruris, or jock itch Itchy, scaly red spots usually appear on the inner thighs.

Tinea barbae Scaly, itchy red spots may be visible on the cheeks, chin, and upper neck. The spots may become crusty or fill up with pus, and hair loss may occur. Tinea manuum Palms may have dry skin with deep cracks, and ring-shaped patches may appear on the back of the hand. A doctor can often diagnose ringworm just by looking at it and asking questions about the symptoms and your lifestyle.

Sometimes the doctor will scrape off a small sample of the flaky infected skin to look at under a microscope or to test in a laboratory. Over-the-counter OTC antifungal creams, sprays, or powders may solve a mild infection.

Ringworm on the nails or scalp usually is treated with medicine taken by mouth for 1 to 3 months. An antifungal shampoo prescribed by the doctor can help prevent the spread to other people. Use the medicine as long as is recommended, even if the rash seems to be getting better.

If not, the infection can come back and spread to other parts of the body. Most mild cases of ringworm usually clear up in 2 to 4 weeks. But treatment might be needed for up to 3 months if the infection is more serious, or affects the nails or the scalp.

Reviewed by: Michelle P. Tellado, MD. Larger text size Large text size Regular text size. What Is Ringworm? What Causes Ringworm? Is Ringworm Contagious? When should you call your doctor? If you suspect you have ringworm of the skin, call your doctor if: You have patches of skin that are itchy, red, or scaly with bumps that look like blisters, and they have not improved after 2 weeks of treatment with a nonprescription antifungal product.

Signs of bacterial infection develop. Signs may include: Increased pain, swelling, redness, tenderness, or heat. Red streaks extending from the area. Discharge of pus. Fever of The rash appears to be spreading even after treatment. Watchful waiting Watchful waiting is a wait-and-see approach. Any persistent, severe, or recurring infection should be checked by your doctor. Who to see The following health professionals can diagnose and treat ringworm of the skin: Family medicine physician Pediatrician Dermatologist Nurse practitioner Physician assistant Internist.

Exams and Tests Doctors often can easily recognize ringworm by its ring-shaped rash. Tests for ringworm of the skin include: A KOH potassium hydroxide preparation. This test can help your doctor find out whether a fungus is causing your rash. The doctor will take a sample of your skin by lightly scraping the infected area. The sample is placed on a slide with potassium hydroxide KOH solution and gently heated. If fungus cells are present, the doctor can then see them with a microscope.

A Wood's light exam. This test may be used to see if the rash is caused by a fungus. Your doctor will shine a special light on your skin where you have the rash. Certain kinds of fungi glow under this light. A fungal culture skin culture. This test can identify the type of fungus that is causing your infection.

Usually a culture is only done if the diagnosis is difficult or the skin condition is not responding to treatment. This test may take up to 4 weeks, because it takes time for the fungus to grow.

Treatment Overview Most cases of ringworm of the skin, including jock itch and ringworm of the hand, can be treated with creams or ointments that you put on your skin to kill fungi.

What to think about You should treat a fungal infection right away. Prevention To prevent ringworm of the skin: Keep your skin clean and dry. Avoid tight underwear, pants, and panty hose. Always dry yourself completely after showers or baths. After drying your skin with a towel, allow your skin to air-dry before putting your clothes on. You can also use a hair dryer, set on a cool setting, to dry your skin. Do not share clothing, sports equipment, towels, or sheets.

If you think you have been exposed to ringworm, wash your clothes in hot water with fungus-killing fungicidal soap. Wear slippers or sandals in locker rooms, showers, and public bathing areas. Shower and shampoo thoroughly after any sport that requires skin-to-skin contact. If you have athlete's foot , put your socks on before your underwear so that fungi do not spread from your feet to your groin. Also, when toweling off after a shower or bath, dry your feet last. Take your pet to a veterinarian if it has patches of missing hair, which may be a sign of a fungal infection.

Household pets can spread fungi that cause ringworm in people. Home Treatment In most cases, you can treat ringworm of the skin with antifungal creams or ointments. Wash the rash with soap and water, and dry thoroughly. For large areas of blistered sores, use compresses such as those made with Burow's solution available without a prescription to soothe and dry out the blisters.

Apply antifungal cream beyond the edge or border of the rash. Follow the directions on the package. Don't stop using the medicine just because your symptoms go away. If symptoms do not improve after 2 weeks, call your doctor. Medications Most ringworm infections of the skin can be treated at home with nonprescription antifungal creams. Medicine choices The most common antifungals used to treat ringworm of the skin are: Allylamines, such as terbinafine Lamisil. Allylamines come as creams, pills, and gels.

Terbinafine also comes as oral granules, which are little grains that can be sprinkled over food and easily swallowed. Lamisil is available as a cream without a prescription. Oral prescription forms include fluconazole Diflucan and itraconazole Sporanox.

Some of these medicines are available without a prescription. Brand names include Micatin and Mycelex. Griseofulvin Grifulvin V. Griseofulvin comes in pill form and requires a prescription.



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