Itchy bumps in the sun may be caused by solar dermatitis and cholinergic urticaria, which can be treated by daily protection, topical medication and oral medication. 1. Daily protection: when the sun is very itchy bumps, patients should protect their skin, usually avoid sun exposure, when you go out, you can apply sunscreen, sun umbrellas, wear sun clothing for protection. 2. Topical medication: after sun exposure localized itchy bumps patients can be under the guidance of the doctor local use of halometasone cream, tacrolimus ointment and other anti-inflammatory drugs to alleviate the inflammation, topical application of glycerite lotion to relieve the itching. 3. Oral medication: the sun on the goosebumps itchy, patients can take under medical supervision, levocetirizine hydrochloride tablets, loratadine tablets and other antihistamines for treatment, serious cases can be added with glucocorticosteroids, such as prednisone treatment. When this kind of situation occurs, the patient should pay attention to the daily protection, to avoid the symptoms of another attack caused by discomfort, the drug should be used under the guidance of a physician.