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Toenail fungus typically causes nails to become yellow, brown, or white, thickened, brittle, or crumbly, and may produce a mild odor. A physically traumatized nail usually has a clear injury history and does not spread to neighboring nails. A physician can assess your presentation and, if needed, recommend confirmatory testing.

Oral antifungals like terbinafine and itraconazole are generally well tolerated. However, they are processed by the liver, so your physician may ask about your liver health and any other medications you take. Rarely, liver enzyme elevations can occur, which is why monitoring may be recommended during longer treatment courses.

Because nails grow slowly, full clearance can take 6 to 18 months even after the infection is eliminated. Oral antifungal courses typically last 6 to 12 weeks, but the nail continues to grow out and clear during the months that follow. Consistent treatment and good nail hygiene improve outcomes.

Yes. The fungi that cause onychomycosis are contagious. They can spread to other toenails, to the skin (causing athlete's foot), and to close contacts through shared surfaces like shower floors, towels, or nail tools. Treating the infection promptly and practicing hygiene reduces the risk of spread.

Keeping feet clean and dry, trimming nails straight across, wearing moisture-wicking socks, using antifungal powder in shoes, and avoiding walking barefoot in communal wet areas can all support treatment. These steps also reduce the chance of reinfection after clearance.

Topical antifungals like ciclopirox can be effective for mild or superficial infections but have limited penetration to the deeper nail bed where severe fungal infections reside. Oral antifungals typically have higher cure rates for moderate to severe onychomycosis. Your physician will help determine the best approach for your case.

Doctronic uses AI-assisted evaluation to gather your symptoms and health history, then routes your case to a licensed physician who reviews everything and creates a personalized treatment plan. If a prescription is appropriate, it is sent to your preferred pharmacy.

Yes. Doctronic connects you with fully licensed physicians, and all consultations are HIPAA-compliant. Every treatment plan is doctor-reviewed. Doctronic is available to adults 18 and older in any U.S. state.