Diabetic patients with itchy red bumps on the body, considering poor glycemic control, insect bite dermatitis, urticaria, eczema, etc., need to take corresponding treatment for the cause of the disease. 1. Poor glycemic control: diabetic patients with poor glycemic control, prone to diabetic dermatopathy, itchy red bumps, etc., at this time you need to control blood glucose, and at the same time, the application of antihistamine drugs such as loratadine. 2. Insect bite dermatitis: diabetic patients bitten by insects will lead to red bumps on the body, accompanied by itching symptoms, known as insect bite dermatitis. Under the guidance of a doctor, you can use local glycerite lotion, which has the effect of astringency and itching. If the symptoms are more serious, you can follow the doctor’s instructions oral antihistamines, such as loratadine, cetirizine and so on. 3. Urticaria: If a diabetic patient suffers from urticaria, the itchy red bumps will also appear on the body. Under the guidance of the doctor, you can take oral cetirizine, loratadine and other antihistamines, which can play an anti-inflammatory and anti-allergic effect. At the same time clear allergens, avoid re-exposure. 4. Eczema: Eczema can also cause itchy red bumps on the body of diabetic patients, after diagnosis, you can use hydrocortisone, dexamethasone and other glucocorticosteroids under the guidance of the doctor, to play an anti-inflammatory, anti-itching effect. Avoid scratching the skin during this period, and keep the area clean. For diabetic patients with itchy red bumps, they should go to the hospital for examination, clear diagnosis, and choose the appropriate way of treatment.