The difference between heat rash and eczema lies in the causes, symptoms and treatment. 1. Causes: Prickly heat is a superficial, inflammatory skin disease caused by prolonged exposure to a hot or humid environment in most cases. Eczema is a chronic, inflammatory, itchy skin disease caused by a variety of elements. 2. Symptoms: Heat rash will appear as small raised blisters, papules, pimples, and may be accompanied by tingling and itching and other uncomfortable symptoms, and in severe cases, headache, fever, dizziness and other systemic symptoms may also occur. Eczema in the acute stage manifested as erythema, papules, etc., subacute stage manifested as redness, swelling, oozing, crusting, etc., chronic stage manifested as roughness, hypertrophy, mossy changes and other symptoms. 3. Treatment: Heat rash is often treated with glycerin lotion, prickly heat powder, loratadine tablets, amoxicillin capsules and other drugs. Eczema can use glycerine lotion, hydrocortisone cream, cetirizine hydrochloride tablets, etc., can also be ultraviolet light and other methods of combined treatment to improve the symptoms. It is recommended that patients with the above symptoms go to a regular hospital in time to diagnose and treat the condition, after clarifying the condition, under the guidance of a professional doctor to carry out targeted treatment, to avoid blindly self-medication, so as not to cause adverse consequences.