Is onychomycosis dangerous
Rachel Hickman
Published Mar 11, 2026
While toenail fungus is common, it’s usually not harmful. Symptoms mostly affect the look of your toenail. Toenail fungus may spread to the skin between your toes or other areas of your body. When getting dressed, put your socks on first to reduce the chance of spread.
What happens if onychomycosis is left untreated?
If left untreated, fungal nail infections can cause difficulties with walking, exercising or manual tasks such as typing. The main symptoms of onychomycosis include the nail becoming: Brittle. Broken.
Is onychomycosis fatal?
Although not life-threatening, onychomycosis (a fungal infection of the nail, usually caused by a dermatophyte) constitutes an important public health problem because of its high prevalence (about 10% of the U.S. population) and associated morbidity.
Is onychomycosis serious?
A severe case of nail fungus can be painful and may cause permanent damage to your nails. And it may lead to other serious infections that spread beyond your feet if you have a suppressed immune system due to medication, diabetes or other conditions.Is onychomycosis curable?
Systemic antifungal agents are the most effective treatment for onychomycosis, but cure rates are much less than 100%. Terbinafine (Lamisil) is the most effective systemic agent available.
What causes onychomycosis?
Onychomycosis is caused by 3 main classes of fungi: dermatophytes, yeasts, and nondermatophyte molds. Dermatophytes are by far the most common cause of onychomycosis. Two major pathogens are responsible for approximately 90% of all onychomycosis cases.
What does onychomycosis look like?
Onychomycosis: Fungus infection of the nail bed under the fingernails or toenails. Onychomycosis makes the nails look white and opaque, thickened, and brittle. It usually produces no symptoms other than a cosmetic problem.
What kills toe fungus?
Prescription oral antifungals, such as terbinafine (Lamisil) or fluconazole (Diflucan), are traditionally used to treat toenail fungus. These treatments are often effective, but they may cause serious side effects ranging from upset stomach and dizziness to severe skin problems and jaundice.What kills nail fungus fast?
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.
Can I cut off my toenail fungus?If you do have a toenail fungus, your doctor will likely recommend one or more of the following treatment options: Trimming the Toenail Trimming the toenail is usually combined with medication, but having a podiatrist periodically trim the nail down is helpful and allows the medication to work better, says Sundling.
Article first time published onHow long does it take onychomycosis to heal?
Usually three months of treatment cures a toenail fungal infection. Antifungal pills, however, can cause side effects.
How do you confirm onychomycosis?
Traditionally, in dermatologic practice, the diagnosis of onychomycosis is confirmed by direct microscopic examination of a specimen prepared with potassium hydroxide (KOH) to detect fungal elements and mycologic culture in a central laboratory, and to identify the specific pathogen and confirm that it is viable.
How long does onychomycosis last?
AgentDoseDurationCiclopirox nail lacquerapply once per dayRemove lacquer once per week. Treat for up to 48 weeksAmorolfine nail lacquerapply once or twice a weekRemove lacquer before each new application. Toenails: 9–12 months. Fingernails: 6 months
Can onychomycosis go away on its own?
Fungal infections of the toenails — also known as onychomycosis — don’t go away on their own, and if left untreated, the fungus will spread and can eventually destroy the nail.
How do you get rid of onychomycosis?
In white superficial onychomycosis, a number-15 blade or curette can be used to scrape the nail surface or the white area, and remove infected debris. In proximal superficial onychomycosis, the healthy nail plate should be gently pared away with a number-15 scalpel blade.
How do you treat onychomycosis?
Terbinafine, an allylamine, taken orally once daily (250 mg) for 12 weeks for toenails and 6 weeks for fingernails currently is the preferred systemic treatment of onychomycosis, with complete cure rates of 38% and 59% and mycological cure rates of 70% and 79% for toenails and fingernails, respectively.
Can onychomycosis spread to skin?
When fungus builds up under your nail, it can loosen and even separate the nail from the bed. The fungus can also spread to the skin around your nail.
Does onychomycosis affect the skin?
A fungal nail infection is a common condition that can leave you with brittle, discolored nails, usually on your toes. Its formal name is onychomycosis, and it’s a lot like athlete’s foot. But instead of affecting the skin on the bottom of your feet or between your toes, it invades your nails.
How is onychomycosis prevented?
- Keep your hands and feet clean and dry.
- Clip your fingernails and toenails short and keep them clean.
- Don’t walk barefoot in areas like locker rooms or public showers.
- Don’t share nail clippers with other people.
How do I know if my toenail fungus is healing?
Nail fungus can be resistant to treatment and nails take a long time to grow out, so it can take several weeks or months for an infection to be fully resolved. You will know that the treatment is working and the infection is clearing up when you see growth of a new, healthy nail from the base of the nail bed.
Does sunlight help toenail fungus?
It could take three to six months of daily direct sunlight exposure to rid your nail of fungus. Expose your feet to as much natural light as possible. Wearing sandals is one way to help your feet get more sunlight exposure.
What is the white hard stuff under my toenails?
Nail psoriasis sometimes causes too much keratin to grow under the nail. This overgrowth is called subungual hyperkeratosis. People with hyperkeratosis may notice a white, chalky substance under the nail. When this occurs in the toenails, the pressure of shoes pushing down on the nails might cause pain.
Can you get a pedicure if you have nail fungus?
If you suspect you have toenail fungus: if your toenails are thick, yellow, raised, or otherwise not normal looking, you likely have toenail fungus. You absolutely MUST avoid pedicures if you have a skin or nail fungal infection.
What are the stages of toenail fungus?
- Color changes—More pronounced discoloration will occur with nails becoming brown, gray, or a deeper yellow.
- Pronounced ridges—Raised ridges run across the nail.
- Nail thickening—More severe thickening of the nails will occur.
Should I file down a fungus nail?
With that in mind, I generally encourage healthy adult patients with mild toenail fungus to not treat it or to treat it just using topical measures. For example, you can buff the nail down with a file to keep it thin, so the fungus has less of a home to live in. You should also keep the nail trimmed.
What is the best topical treatment for onychomycosis?
Conclusion: Topical treatment with amorolfine, ciclopirox, tavaborole, or efinaconazole is appropriate for cases of mild to moderate toenail onychomycosis due to dermatophyte or mixed dermatophyte/Candida infection.
Can onychomycosis spread other parts body?
But it can spread to other parts of the body. If a fungus is affecting one of your toenails, the toenails surrounding it are more likely to develop it as well, Dr. Goad says. In some people, the fungus can also spread to the surrounding skin, causing athlete’s foot.
How do you treat Onycholysis at home?
Home remedies that may help onycholysis include a range of essential oils. There is some evidence that tea tree oil can help treat fungus infections. Often combined with a carrier oil, tea tree oil has natural antifungal properties and might mean a person does not have to seek further treatment.