Long-standing ringworm on the thighs (Tinea Cruris) usually means the infection has become chronic and needs consistent and proper care. Keep the area clean and completely dry, wear loose cotton underwear, change clothes after sweating, and avoid sharing towels or tight clothing. Avoid using steroid-mixed creams, as they can worsen and prolong the infection even if they give temporary relief. Continue using a plain antifungal cream regularly for a few weeks as advised, even after symptoms improve. Since your infection has lasted for a year, it is important to consult a doctor (you can opt for an online consultation) for proper evaluation and guidance to prevent recurrence and ensure complete cure.