Itchy red rash on the abdomen may be related to eczema, contact dermatitis and ringworm, etc. It is recommended that patients take general treatment, medication and other ways to improve. 1. Eczema: acute eczema can be manifested as erythematous papules with intense itching. It is recommended to use mometasone furoate cream and other glucocorticoid drugs as prescribed by the doctor, and take antihistamine drugs such as loratadine orally to stop the itching if necessary. 2. Contact dermatitis: typical skin lesions are well defined erythema, can be accompanied by papules or papules, often conscious itching or burning pain. Patients should actively identify the cause of the disease, away from sensitizers and stimulants, follow the doctor’s instructions to apply tretinoin and other glucocorticoid drugs, oral cetirizine and other antihistamines. 3. Ringworm: ringworm may also lead to itchy abdominal rash, patients need to disinfect personal clothing in time. It is recommended to use antifungal drugs such as naftifine ketoconazole as prescribed by the doctor to stop the itching. There are many reasons that lead to itchy abdominal rash, it is recommended that patients seek medical examination to clarify the cause of the disease, with the doctor for standardized treatment.