A fungal infection affecting the toes for three years is likely a chronic fungal infection, commonly called athlete's foot or a fungal nail/skin infection, depending on whether the skin, nails, or both are involved. These infections can become long-lasting if the area remains moist, sweaty, or if treatment is stopped too early. Even though you are not diabetic, fungal infections can still persist because fungus grows easily in warm and damp conditions, such as inside shoes and socks. Treatment usually includes antifungal creams or powders for mild skin infection, while long-standing or nail involvement may require antifungal tablets prescribed by a doctor for several weeks or months. It is important not to use steroid-containing creams without medical advice because they may worsen the infection or make it come back repeatedly. Keep the feet clean and completely dry, especially between the toes, and change socks daily. Wear breathable footwear, avoid tight shoes for long hours, and do not walk barefoot in public bathrooms or wet areas. If the nails are thick, discoloured, brittle, or painful, a nail fungal infection may be present and usually needs longer treatment. Since the infection has been present for three years, it is advisable to consult a dermatologist for proper examination and possibly tests to confirm the type of fungal infection before starting medicines. With regular treatment, foot hygiene, and patience, chronic fungal infections can usually be controlled and cured successfully.