Itching on the leg due to a fungal infection is common and can usually be treated effectively with proper care. Keep the affected area clean and dry, avoid tight clothing, and do not scratch, as this can spread the infection. You can use an antifungal cream (such as those containing clotrimazole or terbinafine) applied regularly as advised, and continue it for the full course even if symptoms improve. Avoid sharing towels or clothes, and wash them regularly to prevent the spread. If the infection is extensive, recurrent, or not improving in 1-2 weeks, consult a doctor, as you may need stronger or oral treatment.