Contact with chemicals skin allergies, the patient should promptly detach from the allergen, and then go to the hospital, under the guidance of the doctor to carry out targeted treatment, the treatment method includes topical drugs, oral medication and so on. 1. Get away from the allergen: contact with chemicals cause skin allergies, should immediately stay away from the allergen and timely to the hospital for treatment. Some patients with mild allergies can relieve their symptoms in a short time after getting away from the allergens. 2. Topical medication: If the allergy symptoms are mild, patients can use glycerin lotion under the guidance of the doctor. If the allergy symptoms are more serious, patients can use topical glucocorticoid ointment under the guidance of the doctor, such as Denadyl cream, hydrocortisone butyrate cream, mometasone furoate cream, halometasone cream, fluticasone propionate cream and so on for treatment to alleviate the symptoms of allergy. 3. Oral medication: patients can be treated with oral antihistamines under the guidance of a doctor, including loratadine tablets, cetirizine hydrochloride tablets, ebastine tablets and so on. In the process of allergy treatment, patients should pay attention to the protection of the skin, to avoid external stimulation of the skin, such as violent scratching, excessive washing, hot water, etc., to avoid aggravation of skin lesions or cause infection. If you feel unwell, you should go to the hospital in time to avoid delaying your condition.