Betamethasone is a corticosteroid that is used to treat a range of conditions caused by inflammation, such as allergic reactions, skin conditions, autoimmune disorders, and certain types of arthritis. It works by reducing inflammation and suppressing the immune system. This medication can be applied topically in the form of creams, ointments, or lotions for skin conditions, or taken in oral or injectable forms for more systemic conditions. Betamethasone is effective in treating conditions like eczema, psoriasis, and dermatitis, as well as more severe inflammatory conditions like asthma or inflammatory bowel disease. It is important to use Betamethasone as prescribed to minimize potential side effects, including skin thinning or other systemic effects, especially with long-term use.