I understand how frustrating it is to deal with persistent itching and discomfort when initial treatments don't work. Since topical antifungals haven't cleared the infection, the next step is usually to see a healthcare professional. They can confirm the diagnosis with a quick skin scraping and may prescribe oral antifungal medications, such as terbinafine or itraconazole, which treat the fungus from the inside out. Please note that fexofenadine helps relieve itching but does not cure the fungal infection itself. In the meantime, keep the affected areas completely clean and dry, wear breathable cotton socks, and avoid sharing towels.