Pertaining to a particular surface area. A topical agent is applied to a certain area of the skin and is intended to affect only the area to which it is applied. Whether its effects are indeed limited to that area depends upon whether the agent stays where it is put or is absorbed into the blood stream. See the entire definition of Topical
Any solution that is administered by applying it to the surface of the skin. In theory this limits the activity to the area it was applied to and prevents side effects, but in reality certain medications can be absorbed through the skin into the blood stream.
Describes medications that are applied directly to the surface of the skin. Topical treatments for psoriasis—including corticosteroids, salicylic acid, and coal tar—are most often used to treat mild forms of the disease.
In medicine, a topical medication is applied to body surfaces such as the skin or mucous membranes such as the vagina, penis, anus, throat, eye or the ear. Some hydrophobic chemicals such as steroid hormones can be absorbed into the body after being applied to the skin in the form of a cream, gel or lotion. Transdermal patches have become a popular means of administering some drugs for birth control, hormone replacement therapy, and prevention of motion sickness.
(1) Stamp or cover showing a given subject. Examples are flowers, art, birds, elephants or the Statue of Liberty. (2) The collection of stamps by the topic depicted on them, rather than by country of origin. See also Thematic.