Topical corticosteroids are medications applied directly to the skin to reduce inflammation and relieve symptoms associated with various skin conditions, such as eczema, psoriasis, and dermatitis. They work by suppressing the immune response and decreasing swelling, redness, and itching. These medications come in various strengths, from mild to potent, and are available in different forms, including creams, ointments, and lotions. While effective, prolonged use can lead to side effects, such as skin thinning or stretch marks, so it's important to use them as directed by a healthcare professional.