Skin allergies with red spots may be caused by eczema, drug rash, contact dermatitis and other diseases, which can be improved through general treatment, medication and other ways. 1. Eczema: If eczema causes skin allergies and red spots, patients should avoid scratching and excessive cleaning of the affected area, and can follow the doctor’s instructions to use topical glucocorticoid drugs, such as dexamethasone, trimethoprim, etc., which has the effect of relieving itchiness and anti-allergy. 2. Drug rash: drug rash can also cause skin allergies and red spots, patients should immediately stop using allergy-causing drugs, keep the skin clean. Can follow the doctor’s instructions to take antihistamines, such as loratadine, cetirizine, etc., to play the role of anti-itching, anti-allergy. Topical glucocorticoid drugs such as mometasone furoate. In severe cases, systematic use of glucocorticosteroids such as methylprednisolone is required. 3. Contact dermatitis: skin allergies and red spots may be caused by contact dermatitis, the patient should avoid re-exposure to irritants. You can follow the doctor’s instructions to use hydrocortisone, halometasone and other glucocorticoid drugs, to play an anti-inflammatory, anti-allergic effect. The causes of skin allergies and red spots are more, it is recommended to go to the regular hospital to check, under the guidance of the doctor for treatment.