Medical & Surgical Dermatology
Athlete’s foot, also called tinea pedis, is the most common type of fungal infection. It can affect any boy, girl, man, woman, athlete or couch potato. It’s contagious, too, which means that being aware of how it spreads could reduce your chances of getting it. The medical dermatologists at Water’s Edge Dermatology can help diagnose and treat athlete’s foot.
WHAT IS ATHLETE'S FOOT?
Athlete’s foot is an infection caused by a group of mold-like fungi called dermatophytes. These tiny organisms are everyday residents in our skin, but their growth is kept in check when the skin is clean and dry. It’s when the skin stays moist for too long in tight spaces (like shoes) that those dermatophytes wake up with expansion on their mind. If your socks and shoes remain damp for too long, it’s going to create a party-like atmosphere for fungi.
The symptoms of athlete’s foot are known to most of us with televisions – itching, burning, stinging, and flaking. Another common signal is a red rash. You could also have itchy blisters or excessive dryness on the bottoms or sides of your feet. Cracking of the skin is another indication that you may have athlete’s foot. You probably won’t have all of the symptoms, which most commonly occur between the toes.
Another type of fungal infection could mimic athlete’s foot, so if you have thick, crumbling nails that separate from the nail bed, make an appointment with your Florida center for dermatology so a practitioner can diagnosis the problem. They’ll also check for eczema or psoriasis, as those can look an awful lot like athlete’s foot.
TREATING ATHLETE'S FOOT
While most cases of athlete’s foot can be controlled with over-the-counter remedies, usually in the form of sprays, creams or powders, severe cases should be treated by a Water’s Edge dermatology practitioner. They can prescribe a prescription-strength topical or oral medication. If your athlete’s foot recurs frequently, your dermatologist may recommend that you stay on medication for a long period of time. Let them know about all the medications you’re taking because of potential interaction complications.
If athlete’s foot goes untreated, a secondary infection can occur where bacteria act to cause tissue breakdown. If this happens, the skin between your toes erodes, which can be very painful. An allergic response that causes blistering on your hands, fingers and toes could also occur. Doing something about athlete’s foot before it gets to the toenails is crucial because once it’s there, it’s difficult to eliminate.
PREVENTING ATHLETE'S FOOT
Preventing athlete’s foot starts in your own environment. If you exercise in sneakers, chances are your socks get moist. Remove them as soon as you can and wash and dry your feet. Drying out your feet is the best thing you can do to prevent athlete’s foot.
If you wear the same pair of shoes every day, you’re at greater risk because your shoes don’t have the chance to get totally dry, so you’re slipping your feet into an environment well suited for fungi. If you have a great pair of shoes that actually breathe, then this isn’t a problem.
Here are a few more prevention tips:
Choose natural materials. Wear socks made with natural material, like cotton, or a synthetic fiber designed to draw moisture away from your feet. Some doctors even suggest that you avoid cotton socks altogether because they trap moisture.
Change socks and stockings regularly. If your feet sweat a lot, change your socks twice a day.
Wear light, well-ventilated shoes. Avoid shoes made of synthetic material, such as vinyl, plastic or rubber.
Protect your feet in public places. Wear waterproof sandals or shower shoes in communal showers, pools, fitness centers and other public areas.
Treat your feet. Use powder, preferably antifungal, on your feet daily.
Don’t share shoes. Sharing risks spreading a fungal infection.
Don’t share towels. If you wipe with an infected towel, the fungus could
spread to you.
Athlete's foot is a fungal infection that develops in the moist areas between your toes and sometimes on other
parts of your foot. Athlete's foot usually causes itching, stinging and burning.
Athlete's foot, also called tinea pedis, is the most common type of fungal infection. It's closely related to other fungal infections such as ringworm and jock itch. Although contagious, athlete's foot often can be treated with over-the-counter antifungal medications.
The signs and symptoms of athlete's foot can be numerous, although you probably won't have all of them. They include:
· Itching, stinging and burning between your toes
· Itching, stinging and burning on the soles of your feet
· Itchy blisters
· Cracking and peeling skin, especially between your toes and on the soles of your feet
· Excessive dryness of the skin on the bottoms or sides of the feet
· Toenails that are thick, crumbly, ragged, discolored or pulling away from the nail bed
Onychomycosis — a fungal infection of the nail — may develop with or without other signs and symptoms of athlete's foot.
When to see a dermatologist
If you have a rash on your foot that doesn't improve or worsens after you've followed home and lifestyle remedies, see your dermatologist. See your dermatologist sooner if you notice excessive redness, swelling, drainage or fever, or if you have diabetes and suspect you have athlete's foot.
Athlete's foot is closely related to other fungal infections, including ringworm and jock itch. A group of mold-like fungi called dermatophytes causes these infections. These microscopic organisms are normal inhabitants of your skin, and their growth stays in check as long as your skin is clean and dry. However, dematophytes thrive in damp, close environments.
Athlete's foot thrives in thick, tight shoes that squeeze the toes together and create warm, moist areas between them. Damp socks and shoes and warm, humid conditions also favor the organisms' growth. Plastic shoes, in particular, provide a welcoming environment for fungal growth and infection.
Athlete's foot is contagious and can be spread by contact with an infected person or with contact with contaminated surfaces, such as towels, floors and shoes.
You are at higher risk of athlete's foot if you:
· Are a man
· Frequently wear damp socks or tightfitting shoes
· Share mats, rugs, bed linens, clothes or shoes with someone who has a fungal infection
· Walk barefoot in public areas where the infection can spread, such as locker rooms, saunas, swimming pools, communal baths and showers
· Have a weakened immune system
Athlete's foot can lead to complications, including:
· Secondary infections. Athlete's foot, a fungal infection, can create an environment that invites a secondary bacterial infection. By producing an antibiotic substance, the fungus can kill off vulnerable bacteria and favor the overgrowth of hardier, resistant bacteria. In turn, the bacteria release substances that can cause tissue breakdown — soggy skin and painful eroded areas between the toes.
· An allergic response. After an episode of athlete's foot, proteins might enter your bloodstream, leading to an allergic reaction that may cause an eruption of blisters on your fingers, toes or hands (dermatophytid or "id" reaction).
Tests and diagnosis
Your dermatologist will want to determine if your signs and symptoms are caused by athlete's foot or another skin disorder, such as dermatitis, psoriasis or a low-grade infection of the skin between the toes that causes the skin to split and peel (erythrasma).
Your dermatologist may take skin scrapings or samples from the infected area and view them under a microscope. This is called a potassium hydroxide (KOH) test. If a sample shows fungi, treatment may include an antifungal medication. If the test is negative, your dermatologist may examine the area with a Wood's lamp (black light) to see if there is a reddish fluorescence caused by erythrasma bacteria. If both tests are negative, a sample may be sent to a lab to determine whether it will grow fungi under the right conditions. This test is known as a culture. Your dermatologist may also order a culture if your condition doesn't respond to treatment.
Treatments and drugs
If your athlete's foot is mild, your dermatologist may suggest using an over-the-counter antifungal ointment, lotion, powder or spray. If your athlete's foot doesn't respond, you may need a prescription-strength topical medication or an oral (systemic) medication.
There are numerous over-the-counter (OTC) medications on the market. Medicated powders also will help keep your feet dry. OTC medications include:
· Butenafine (Lotrimin Ultra)
· Clotrimazole (Lotrimin AF)
· Miconazole (Desenex, Zeasorb, others)
· Terbinafine (Lamisil AT)
· Tolnaftate (Tinactin, Ting, others)
If athlete's foot is severe or doesn't respond to over-the-counter medicine, you may need a prescription-strength topical or oral medication.
· Topical medications. These include clotrimazole and miconazole.
· Oral medications. These include itraconazole (Sporanox), fluconazole (Diflucan) and terbinafine (Lamisil). Side effects from oral medications include gastrointestinal upset, rash and abnormal liver function. Taking other medications, such as antacid therapies for ulcer disease or gastroesophageal reflux disease (GERD), may interfere with the absorption of these drugs. Oral medications for athlete's foot may alter the effectiveness of warfarin, an anticoagulant drug that decreases the clotting ability of your blood.
Your dermatologist may prescribe an oral antibiotic if you have an accompanying bacterial infection. In addition, your dermatologist may recommend wet dressings, steroid ointments, compresses or vinegar soaks to help clear up blisters or soggy skin.
Wash and dry the affected area. Then, apply a thin layer of the topical agent once or twice a day for at least two weeks, or according to package directions. If you don't see an improvement after four weeks, see your dermatologist.
If your athlete's foot recurs frequently, your dermatologist may recommend that you use a medication continuously.
These tips can help you avoid athlete's foot or ease the symptoms if infection occurs:
· Keep your feet dry, especially between your toes. Go barefoot to let your feet air out as much as possible when you're home.
· Go with natural materials. Wear socks that are made of natural material, such as cotton or wool, or a synthetic fiber designed to draw moisture away from your feet.
· Change socks and stockings regularly. If your feet sweat a lot, change your socks twice a day.
· Wear light, well-ventilated shoes. Avoid shoes made of synthetic material, such as vinyl or rubber.
· Alternate pairs of shoes. Don't wear the same pair every day so that you give your shoes time to dry between wearings.
· Protect your feet in public places. Wear waterproof sandals or shower shoes in communal showers, pools, fitness centers and other public areas.
· Treat your feet. Use powder, preferably antifungal, on your feet daily.
· Don't share shoes. Sharing risks spreading a fungal infection.
Information courtesy of the Mayo Clinic, Rochester, Minn.