Red bumps on the waist and very itchy, may be related to contact dermatitis, eczema and ringworm and other diseases, in the treatment of anti-allergy, anti-itch and anti-fungal medication, respectively. 1. contact dermatitis is due to local skin in contact with some kind of irritating objects, an allergic reaction occurs, in the clinic will be manifested as itchy skin and rash, in the treatment of the main is to keep the local clean, and at the same time to give anti-allergic anti-itch medication, such as topical dinexidine cream. 2. Eczema is due to a variety of factors stimulate and cause skin inflammation, clinical can be manifested as a rash and intense itching, in the treatment of some of the main anti-itching medication, such as topical dexamethasone cream, oral chlordiazepoxide tablets and so on. 3. Ringworm is a kind of skin disease caused by infection of ringworm, and anti-fungal drugs are needed in the treatment, such as topical naftifine ketoconazole cream. Because of the individual differences in clinical manifestations, it is recommended that the patient consult a doctor in time and follow the doctor’s instructions to use medication.