Onychomycosis, commonly known as nail fungus, is a fungal infection of the nail bed that gradually causes damage, corrosion, or destruction of the nails. Once this condition occurs, it is necessary to seek treatment at a dermatology department of a regular hospital. Oral antifungal medications commonly used can cure the disease, but these medicines can affect liver function and should only be used by individuals with normal liver function. If the liver function is poor or transaminase levels are high, oral medications are not recommended. Instead, topical medications can be used for treatment, although the effect of topical treatments is slower and requires long-term commitment to completely cure. Since this disease is contagious and recurrent, during treatment, it is advisable to avoid spicy and irritating foods, not to soak in public baths or swim, and not to wear shared slippers. (Medication usage should be under the guidance of a doctor.)