Betaderm Cream. This medication is used to treat a variety of skin conditions (e.g., eczema, dermatitis, allergies, rash). Betamethasone reduces the swelling, itching, and redness that can occur in these types of conditions. This medication is a medium-strength corticosteroid.. Find information about which conditions Betaderm Topical is commonly used to treat.. Betaderm - General Information. A glucocorticoid given orally, parenterally, by local injection, by inhalation, or applied topically in the management of various disorders in which corticosteroids are indicated.. Betaderm Cream is used for Cutaneous inflammation, Skin inflammation, Itch or rash, Ataxia telangiectasia, Phimosis and other conditions. Betaderm Cream may also be used for purposes not listed in this medication guide.. . .