<P> In other cases , topical is defined as applied to a localized area of the body or to the surface of a body part regardless of the location of the effect . By this definition , topical administration also includes transdermal application , where the substance is administered onto the skin but is absorbed into the body to attain systemic distribution . Such medications are generally hydrophobic chemicals , such as steroid hormones . Specific types include transdermal patches have become a popular means of administering some drugs for birth control , hormone replacement therapy , and prevention of motion sickness . One example of an antibiotic that may be applied topically is chloramphenicol . </P>
<P> In other cases , topical is defined as applied to a localized area of the body or to the surface of a body part regardless of the location of the effect . By this definition , topical administration also includes transdermal application , where the substance is administered onto the skin but is absorbed into the body to attain systemic distribution . Such medications are generally hydrophobic chemicals , such as steroid hormones . Specific types include transdermal patches have become a popular means of administering some drugs for birth control , hormone replacement therapy , and prevention of motion sickness . One example of an antibiotic that may be applied topically is chloramphenicol . </P>
method of administering a drug by topical friction over skin is called
method of administering a drug by topical friction over skin is called
transdermal application
transdermal application