The back is red from the sun and very painful, consider sunburn. It needs to be improved by daily care, topical medication and oral medication.
1. Daily care: Avoid sun exposure, when going out, you can use umbrellas, hats and other physical ways to prevent sunburn. The pain can be relieved by cold compresses.
2. Topical medication: you can apply glycerine lotion, compound indomethacin tincture, dexamethasone cream, halometasone ointment and other medications to reduce the inflammatory response of the back and relieve pain.
3. Oral medication: Those with significant pain can take oral non-steroidal anti-inflammatory drugs such as ibuprofen and acetaminophen to reduce local pain.
Sunburns should be treated with medication as prescribed by the doctor.