Tocoderm NF Plus Cream you have been using contains a strong steroid. Using it daily for five years has likely caused skin thinning and a "rebound" itch whenever you stop. To cure this, you must break the steroid cycle. Please consult a dermatologist. They will likely transition you to a pure, steroid-free antifungal cream (like clotrimazole or miconazole) or prescribe oral antifungal tablets (such as fluconazole) to treat the actual infection. Keep the area completely clean and dry, and wear loose, breathable cotton clothing. Do not worry; this rebound effect is very common and entirely treatable once you switch to the correct, steroid-free therapy under medical guidance.