Itchy rash on the inner thighs may be related to ringworm, eczema, allergic dermatitis, etc., and should be treated with general therapy, medication or physical therapy. 1. For ringworm, it is necessary to follow the doctor’s instructions to use external miconazole cream or oral terbinafine and other antifungal drugs. 2. For eczema caused by, can follow the doctor’s advice can follow the doctor’s advice oral cetirizine and other antihistamines, vitamin C, 10% calcium gluconate solution, prednisone and other glucocorticosteroids, topical mometasone furoate and other glucocorticosteroids such as ointment, pimecrolimus cream and other calcium-modulated neural phosphatase inhibitors; can be through the ultraviolet light irradiation treatment of skin lesions, which will help the recovery of the skin lesions. 3. For allergic dermatitis caused by, should be clear and away from allergens, avoid scratching, try to avoid using soap and other irritants to wash the surface skin; can follow the doctor’s instructions for external hydrocortisone and other glucocorticoid ointment, oral loratadine and other antihistamines, prednisone and other glucocorticosteroids and so on. It is recommended that people with itchy skin and red rash on the inner thighs go to the hospital in a timely manner to clarify the cause of the disease and standardize the treatment under the guidance of the doctor.