How to deal with heat rash (prickly heat) all over the body?

When suffering from heat rash, the following measures can be taken to alleviate symptoms and promote recovery: 1. **Stay cool**: Move to a cool, well-ventilated environment as soon as possible to reduce sweating, which helps relieve symptoms of heat rash. 2. **Skin cleansing**: Gently clean the skin with lukewarm water. Avoid using water that is too hot or too cold, as it may irritate the skin. After cleansing, gently pat the skin dry—do not rub. 3. **Wear loose clothing**: Choose loose-fitting, breathable, and soft clothing. Avoid tight-fitting garments or those made from synthetic fibers to reduce skin friction and irritation. 4. **Physical treatment**: Apply a cold towel or ice pack to the affected skin to help improve local blood circulation and relieve itching and discomfort. Additionally, apply an appropriate amount of talcum powder or calamine lotion to help soothe, relieve itching, and reduce inflammation. 5. **Dietary adjustment**: Maintain a light diet and consume more fruits and vegetables rich in vitamin C. Avoid spicy, oily, or irritating foods to support the body's metabolism and recovery. 6. **Medication**: If symptoms are severe, topical medications (e.g., triamcinolone acetonide, menthol calamine lotion) or oral medications (e.g., cetirizine hydrochloride tablets, loratadine dispersible tablets) may be used under a doctor's guidance.