There is no fastest way to get relief from itchy skin allergies. Symptoms can be improved by general treatment, topical medication and oral medication. 1. General treatment: you need to find the cause of the disease, avoid re-exposure, but also to avoid hot water scalding, violent scratching and excessive wiping. 2. Topical medication: patients with symptoms of skin allergy and itching, can be used externally with glycerite lotion, which can play a role in astringency and stop itching. If necessary, you can apply glucocorticoid ointment such as hydrocortisone ointment, to play an anti-inflammatory effect. 3. Oral medication: You can cooperate with the doctor to choose the appropriate antihistamine drugs, such as benadryl, chlorpheniramine maleate, such as loratadine, cetirizine and so on. It is recommended to use medication under the guidance of a doctor, not blindly self-medication, in order to avoid adverse effects.