What should I do if my skin itches after applying the Sanfu patch?

When skin itching occurs after using the Sanfu Patch, the following measures can be taken: 1. Immediately discontinue use of the Sanfu Patch to avoid further skin irritation. 2. Wash the application area with clean water to remove any residual medication and reduce ongoing drug-induced skin irritation. 3. Take oral antihistamines such as fexofenadine tablets or cetirizine tablets to relieve itching. For topical treatment, if scaling or papules appear, apply a corticosteroid cream such as mometasone furoate cream. 4. Keep the affected area dry and clean, wear loose-fitting cotton clothing, and avoid scratching to prevent infection. Additionally, maintain a light diet and avoid spicy or irritating foods.