Nail fungus, also known as onychomycosis, is typically caused by a fungal infection from dermatophytes, yeast, or molds. Fungi thrive in warm, moist environments, making your toenails especially vulnerable if you frequently wear tight shoes or walk barefoot in places like locker rooms, gyms, or swimming pools. Other risk factors include poor foot hygiene, having a weakened immune system, or a history of athlete's foot. Nail fungus can also spread from person to person, so maintaining proper nail care is essential.

Nail fungus often begins as a small white or yellow spot under the tip of the nail. As the infection progresses, the nail may thicken, become discolored (yellow, brown, or white), and begin to crumble or become brittle at the edges. In more advanced stages, the nail can change shape, lift from the nail bed, or develop a foul odor. If you notice any of these changes in your nails, it’s important to seek treatment as early as possible to prevent the infection from worsening.

Treatment for nail fungus typically involves antifungal medications, which can be taken orally or applied directly to the affected nails (topical treatments). In some cases, over-the-counter antifungal creams or nail lacquers can be effective for mild infections. However, severe or persistent infections may require prescription-strength antifungal pills. Laser treatment and, in some cases, removal of the nail may be necessary for very stubborn infections. Our online doctors can assess your condition and recommend the best course of treatment to help clear the infection quickly.

You’ll know that nail fungus is healing when the new nail growth appears healthy and free of discoloration. As your nail grows, the thickened, discolored portions will be gradually replaced by clear, smooth nail tissue. However, because nails grow slowly, it may take several months for the full nail to return to its normal appearance. You may also notice a reduction in brittleness, crumbling, or any foul odor. It’s important to continue treatment as directed by your doctor, even if symptoms start to improve, to ensure the infection is completely gone.