Topical administration refers to the application of a substance directly onto a specific area of the skin or mucous membranes. This method is commonly used for delivering medications, such as creams, ointments, or gels, to treat localized conditions like eczema, psoriasis, or infections. It allows for targeted treatment with minimal systemic absorption. This approach is beneficial because it can reduce side effects associated with oral or injectable medications. Topical administration is often preferred for its ease of use and convenience, making it suitable for patients who may have difficulty swallowing pills or receiving injections.