Thigh skin allergy may be contact dermatitis, urticaria, eczema and other diseases, you can follow the doctor’s instructions to take general treatment, medication and other ways to relieve. 1. Contact dermatitis: If the thigh skin allergy is caused by contact dermatitis, the patient should immediately stop contact with the sensitizer. Topical glucocorticoid drugs such as trimethoprim and hydrocortisone can be used to play an anti-inflammatory and anti-allergic role. 2. Urticaria: Urticaria may also lead to thigh skin allergies, you can take loratadine, ebastine and other antihistamines, with anti-itching, anti-allergic effect. 3. Eczema: thigh skin allergies can also be caused by eczema, patients should avoid excessive cleaning, scratching the affected area, so as not to aggravate the condition. You can use topical dexamethasone, Hasinide and other glucocorticoid drugs to achieve anti-itch, anti-inflammatory, anti-allergic effect. For patients with thigh skin allergies, it is recommended to go to a regular hospital for medical examination, to clarify the cause of the disease, and to use medication under the guidance of the doctor.