Onychomycosis, commonly known as nail fungus, is damage to the nails caused by a fungal infection of the nail bed. Eating pork has no effect on this condition. However, during treatment, it is advised to avoid spicy and stimulating foods, and to limit the consumption of lamb and seafood. This disease is highly contagious and recurrent. It is recommended to seek timely treatment. Oral antifungal medications can be used, but if liver function is abnormal and transaminase levels are high, topical medications are advised. Topical treatments work more slowly, but consistent long-term use can completely cure the condition. After recovery, it's important to maintain proper dietary and lifestyle habits, avoid wearing shared slippers, and stay away from public baths and swimming pools to prevent cross-infection and recurrence.