What should you know about fungus under toe?

Fungal growth can affect moist skin between or beneath the toes, causing itching, scaling, cracking, peeling, or a burning feeling. When the nail is involved, it may become thickened, discoloured, brittle, or separated from the nail bed. Athlete’s foot commonly affects the spaces between toes; nail fungus is a different pattern and often needs a longer treatment plan. A clinician may examine the skin and nail and, when the appearance is unclear, test a sample before choosing medicine.

Keep the area clean and dry, dry carefully between the toes, change damp socks, and avoid sharing towels or footwear. Do not pick at peeling skin or trim a painful nail aggressively. A topical antifungal treatment may suit fungus on the skin, while nail involvement can require a different approach. Use medicine exactly as directed and give the full recommended course; stopping when the itch settles can allow the fungus to remain. Read about [Topical Antifungal Treatment](/treatments/medical-dermatology/topical-antifungal-therapy/) and [Oral Antifungal Treatment](/treatments/medical-dermatology/oral-antifungal-therapy/) with a clinician.

Arrange medical assessment if the toe becomes increasingly red, hot, swollen, or tender, if redness spreads, or if fluid or pus appears. These changes can signal a bacterial skin infection such as [Cellulitis](/conditions/cellulitis/), which needs prompt attention. Seek advice sooner if you have diabetes, reduced circulation, reduced sensation, or a weakened immune system. Persistent peeling or itching despite correct self-care also deserves review.

Could this be [Athlete’s Foot](/conditions/athletes-foot/) or [Nail Fungus](/conditions/nail-fungus/)? Is the nail involved, or only the skin? Which treatment is appropriate for the exact location, and how long should I use it? What should I do if the area becomes painful or starts spreading?