Hydrocortisone is a corticosteroid medication used to reduce inflammation and relieve symptoms associated with various skin conditions, including eczema, dermatitis, allergic reactions, insect bites, and mild to moderate psoriasis. It works by suppressing the immune response and reducing swelling, itching, and redness in affected areas of the skin. Hydrocortisone is available in various forms, including creams, ointments, lotions, and sprays, and is typically applied topically to the affected area.