Small bumps on the hands from the sun, consider long-term exposure to ultraviolet radiation caused by solar dermatitis, urticaria, photosensitivity; should be combined with the cause of the disease to take general treatment, drug therapy to alleviate the symptoms.
1. Solar dermatitis: long-term exposure of the skin to ultraviolet light may cause an inflammatory reaction, which leads to itching and red bumps. When there is no broken skin and no liquid exudation, topical glycerine lotion and dexamethasone ointment can be used; with broken skin as well as liquid secretion, wet compresses with boric acid solution are recommended.
2. Urticaria: When contact with ultraviolet light causes acute allergic reaction, it will induce urticaria, easy to lead to skin, mucous membranes with erythema, wind. Severe cases, need oral cetirizine, loratadine; skin surface itching, redness and other symptoms, available glycerine lotion, there is liquid exudate, and then external boric acid solution wet compresses, breathlessness discomfort, need to be injected with epinephrine.
3. Photosensitivity reaction: If you have previously taken some kind of photosensitive drugs, after exposure to ultraviolet light, it will produce photosensitivity reaction, which will lead to skin pimples, inducing metamorphic reaction. If you are taking quinolone antibiotics, tetracycline antibiotics, etc., need to stop as soon as possible, and then oral cetirizine, loratadine and other drugs to fight allergies.
If the contact with ultraviolet rays causes skin bumps and itching, it is necessary to consult a doctor as soon as possible, and under the guidance of a specialized physician to understand the cause of the disease before treatment, in order to prevent the bumps from increasing.