Mometasone topical is used to relieve the redness, swelling, itching and inflammation and discomfort of various skin conditions, including psoriasis (a skin disease in which red, scaly patches form on some areas of the body and eczema (a skin disease that causes the skin to be dry and itchy and to sometimes develop red, scaly rashes). Mometasone is in a class of medications called corticosteroids.