Betamethasone is a corticosteroid used to treat a variety of conditions caused by inflammation, such as allergic reactions, skin conditions, and autoimmune disorders. It works by suppressing the immune system and reducing inflammation, swelling, and redness. Betamethasone is commonly prescribed for conditions like eczema, psoriasis, arthritis, and certain types of allergies. It may also be used to treat more severe conditions, such as asthma or inflammatory bowel disease, depending on the specific formulation and dosage. As a potent corticosteroid, it is important to use Betamethasone under the guidance of a healthcare professional to avoid potential side effects, such as weakened bones or increased susceptibility to infections when used long-term.