Prickly heat on the back can be treated by keeping the affected area clean and dry, improving lifestyle habits and using medication. 1. Keep the affected area clean and dry: Once patients find that they have prickly heat on their backs, they can keep the affected area clean by changing breathable and clean clothes frequently and keep the indoor environment cool and airy to prevent the condition from worsening. 2. Improve living habits: Once patients find prickly heat on their backs, they need to improve their living habits, avoid spicy and stimulating foods, and eat a light diet. 3. Use of drugs: If the condition is not relieved for a long time, the patient can be treated with drugs, such as topical Dinaid cream, glycerine lotion, etc., and take antihistamines such as loratadine to carry out anti-inflammatory and antipruritic treatment. Once the patient found his back prickly heat, need to consult a doctor in time, under the guidance of the doctor to improve the relevant examination after the targeted treatment and treatment. Another tip: If you need to use drugs should be used under the guidance of a doctor, do not blindly use drugs.