Which condition may be treated by placing a medicinal patch on the skin?

The use of a medicinal patch on the skin is commonly associated with the treatment of motion sickness. Transdermal patches deliver medication directly through the skin and into the bloodstream, providing a convenient and effective method for administering drugs. In the case of motion sickness, patches often contain medication such as scopolamine, which helps to prevent nausea and vomiting associated with travel.

This method is particularly beneficial for those who may have difficulty taking oral medications or need continuous medication over time. The design of transdermal patches allows for a steady release of medication, which helps maintain therapeutic drug levels. In contrast, the other conditions listed—obesity, cancer, and blood clots—typically require different forms of treatment that may not be effectively managed with transdermal patches, such as surgical interventions, systemic therapies, or more direct medicinal approaches.