It is understandable to feel frustrated when a skin infection persists. Antifungal medicines like terbinafine and itraconazole may not work if the infection is actually bacterial or inflammatory (like eczema) rather than fungal. Alternatively, the fungus might be resistant, or there could be an issue with how your body absorbs the medicine. I highly recommend consulting a dermatologist. They can perform a simple skin scraping test or culture to identify the exact cause. Please avoid starting new self-medicated treatments until a definitive diagnosis is made. Keeping the area clean and dry will also help in the meantime.