Itchy skin rash after sunbathing may be solar dermatitis or photosensitive dermatitis, etc., can be sun care, the use of topical or oral medication. 1. solar dermatitis: the disease is the skin receives strong light irradiation caused by an acute damage to the skin reaction, often manifested as erythema with swelling, itching, burning sensation or pain, severe blisters, flaking, etc., can appear after the sun itchy skin rash phenomenon. Treatment should first pay attention to sunscreen, followed by the use of glycerite, compound menthol ointment, etc. in the unbroken place, to relieve local edema, itching symptoms, but also in the doctor’s guidance of topical glucocorticosteroid ointment (such as compound dexamethasone cream, etc.), oral non-steroidal anti-inflammatory drugs (such as ibuprofen, etc.) or antihistamines (such as loratadine, etc.), and so on. 2. photosensitive dermatitis: the disease is due to the patient’s allergy to ultraviolet light and take or contact with exogenous photosensitive substances, according to the relevant characteristics of the disease can be divided into: solar urticaria, polymorphic sun rash, chemical photosensitive dermatitis, pox-like blisters and chronic photochemical dermatitis, and therefore the phenomenon of itchy skin rash after sunbathing can occur. Treatment should first pay attention to sunscreen, avoid taking again or contact with exogenous photosensitizers, and at the same time, under the guidance of the doctor, local topical glucocorticoid ointment (such as mometasone furoate, etc.), oral antihistamines (such as loratadine, etc.), chloroquine or hydroxychloroquine, or even the systematic application of glucocorticoids (such as prednisone, etc.), and other drug therapy. It is recommended that patients with itchy skin rashes after sunbathing should go to regular hospitals in time to get a clear diagnosis and standardize the treatment under the guidance of doctors, so as to avoid serious adverse reactions caused by self-medication.