Back sunburn on the third day itchy, can be used externally with glycerite lotion or hydrocortisone butyrate and other glucocorticoid treatment, systemic symptoms can be used to use the anti-allergic anti-itch medication such as levocetirizine hydrochloride, at the same time to do a good job of sun protection.
Back sunburn is due to more than the tolerated amount of ultraviolet radiation caused by the skin photobiochemical reaction, resulting in cell necrosis, tissue edema and so on. Generally you can use glycerine lotion, or hydrocortisone butyrate and other glucocorticosteroids to treat, but also can use levocetirizine hydrochloride and other anti-allergy anti-itch drugs.
The back of the third day of sunburn itchy, should be avoided to accept the sun again, go out to do a good job of protection, do not scratch the back of the hand, so as not to cause infection, at the same time should pay attention to rest, it is recommended to go to the hospital in a timely manner to check. Under the guidance of the doctor to use drugs.