Inner thigh allergies have more causes, often associated with contact dermatitis, eczema, urticaria, according to the cause of the external use of non-hormonal ointment as well as hormonal ointment. 1. Contact dermatitis: this type of dermatitis is mainly due to local contact with allergic substances caused by allergic reactions. At present, it is necessary to stop contact with the sensitizing substances as soon as possible, and then use hormonal ointment, such as mometasone furoate ointment, halometasone ointment, and Denuded ointment, and so on. 2. Eczema: an allergic reaction of unknown cause, related to internal and external environmental stimuli. Treatment can choose to use topical hormone ointment, such as mometasone furoate ointment, halometasone ointment, and Denadyl ointment. 3. Urticaria: usually related to drug allergy, stimulation by external factors. If the condition is more serious, you can use glycerine lotion for external use, together with oral antihistamine drugs, such as cetirizine tablets. If the inner thigh skin allergies, it is recommended to seek medical advice as soon as possible, and under the guidance of the doctor to analyze the cause and the type of skin disease, strictly comply with the doctor’s instructions to use ointment, do not use without authorization, so as not to cause serious adverse reactions.