What does the term "topical" refer to in terms of medication?

The term "topical" refers specifically to medications that are applied directly to the skin or mucous membranes. This method of administration allows for localized treatment, meaning the medication acts directly at the site of application rather than being absorbed systemically. Topical medications can take various forms, such as creams, ointments, gels, patches, or solutions, and they are commonly used for conditions like skin irritations, infections, or localized inflammation.

The other options highlight different routes of medication administration. Oral administration involves taking medication by mouth, which is processed through the digestive system before entering the bloodstream. Injecting medication into the bloodstream bypasses this process using a syringe, delivering the drug directly into circulation. Administering medication in a vapor form typically refers to inhalants, which are designed to reach the lungs rather than the skin. Therefore, "topical" distinctly pertains to applications intended for skin use, making it the correct choice in this context.