Nail fungus:
Nail fungus is a common condition that begins as a white or yellow spot under the tip of your fingernail or toenail. As the fungal infection goes deeper, nail fungus may cause your nail to discolour, thicken and crumble at the edge. It can affect several nails.
A nail fungus causing thickened, brittle, crumbly or ragged nails. Usually, the problems caused by this condition are cosmetic. The main symptoms are changes in the appearance of nails. Rarely, the condition causes pain or a slightly foul odour.
Nail fungus is also called onychomycosis. When fungus infects the areas between your toes and the skin of your feet, it’s called athlete’s foot (tinea pedis).
Symptoms
- Thickened
- Whitish to yellow-brown discoloration
- Brittle, crumbly or ragged
- Distorted in shape
- A dark color, caused by debris building up under your nail
- Smelling slightly foul
Nail fungus can affect fingernails, but it’s more common in toenails.
Causes
Fungal nail infections are caused by various fungal organisms (fungi). The most common cause is a type of fungus called dermatophyte. Yeast and molds also can cause nail infections.
Fungal nail infection can develop in people at any age, but it’s more common in older adults. As the nail ages, it can become brittle and dry. The resulting cracks in the nails allow fungi to enter. Other factors — such as reduced blood circulation to the feet and a weakened immune system — also may play a role.
Toenail fungal infection can start from athlete’s foot (foot fungus), and it can spread from one nail to another. But it is uncommon to get an infection from someone else
When to see Doctor
You may want to see a physician if self-care steps haven’t helped and the nail becomes increasingly discoloured, thickened or deformed. Also see a doctor if you have diabetes and think you’re developing nail fungus.
Risk Factor
Factors that can increase your risk of developing nail fungus include:
- Being older, owing to reduced blood flow, more years of exposure to fungi and slower growing nails
- Sweating heavily
- Having a history of athlete’s foot
- Walking barefoot in damp communal areas, such as swimming pools, gyms and shower rooms
- Having a minor skin or nail injury or a skin condition, such as psoriasis
- Having diabetes, circulation problems or a weakened immune system
Treatment
Fungal nail infections can be difficult to treat. Talk with your doctor if self-care strategies and over-the-counter (nonprescription) products haven’t helped. Treatment depends on the severity of your condition and the type of fungus causing it. It can take months to see results. And even if your nail condition improves, repeat infections are common.
Medications
- Oral antifungal drugs:These drugs are often the first choice because they clear the infection more quickly than do topical drugs. Options include terbinafine (Lamisil) and itraconazole (Sporanox). These drugs help a new nail grow free of infection, slowly replacing the infected part. You typically take this type of drug for six to 12 weeks. But you won’t see the end result of treatment until the nail grows back completely. It may take four months or longer to eliminate an infection. Treatment success rates with these drugs appear to be lower in adults over age 65. Oral antifungal drugs may cause side effects ranging from skin rash to liver damage. You may need occasional blood tests to check on how you’re doing with these types of drugs. Doctors may not recommend them for people with liver disease or congestive heart failure or those taking certain medications.
- Medicated nail polish:Your doctor may prescribe an antifungal nail polish called ciclopirox (Penlac). You paint it on your infected nails and surrounding skin once a day. After seven days, you wipe the piled-on layers clean with alcohol and begin fresh applications. You may need to use this type of nail polish daily for almost a year.
- Medicated nail cream:Your doctor may prescribe an antifungal cream, which you rub into your infected nails after soaking. These creams may work better if you first thin the nails. This helps the medication get through the hard nail surface to the underlying fungus. To thin nails, you apply a nonprescription lotion containing urea. Or your doctor may thin the surface of the nail (debride) with a file or other tool.
Prevention
The following habits can help prevent nail fungus or reinfections and athlete’s foot, which can lead to nail fungus:
- Wash your hands and feet regularly. Wash your hands after touching an infected nail. Moisturize your nails after washing.
- Trim nails straight across, smooth the edges with a file and file down thickened areas. Disinfect your nail clippers after each use.
- Wear sweat-absorbing socks or change your socks throughout the day.
- Choose shoes made of materials that breathe.
- Discard old shoes or treat them with disinfectants or antifungal powders.
- Wear footwear in pool areas and locker rooms.
- Choose a nail salon that uses sterilized manicure tools for each customer.
- Give up nail polish and artificial nails.
