Treatment for sunburn and sensitive skin?

sounds like rosacea with reactive redness. Have you seen a dermatologist?

For mild sunburn, cool compresses with equal parts of milk and water may suffice. Cold compresses with Burow's solution may also be used, and can be bought at a drugstore. Dissolve 1 packet in 1 pint of water. Soak gauze or a soft clean cloth in it. Gently wring out the cloth and apply to the sunburned area for 15-20 minutes. Change or refresh the cloth and solution every 2-3 hours. Aloe Vera gel or aloe-based lotions may soothe irritated skin. These can be found in the drugstore. Cool baths may help. Avoid bath salts, oils, and perfumes because these may produce sensitivity reactions. Avoid scrubbing the skin or shaving the skin. Use soft towels to gently dry the body. Don't rub. Use a light, fragrance-free skin moisturizer. Avoid lotions that contain topical anesthetic medications because a person can become sensitized and then allergic to that medicine. Stay out of the sun while you are sunburned. Stay hydrated to avoid dehydration.