Methylphenidate (Daytrana) transdermal drug delivery system can be applied to the following skin site:

• A. Hips
• B. Arm
• C. Chest
• D. Back

Answer: (D)

The key idea is choosing a skin site that allows steady absorption and minimizes irritation for a transdermal patch. For Daytrana, the preferred placement is the hip area (outer hip near the waist) because this flat, relatively smooth skin provides good adhesion and consistent drug delivery. You rotate sides to avoid local irritation and track any skin reactions.

The other sites—arm, chest, or back—are not ideal for this patch. The arm and chest can have more movement, hair, or skin folds that disrupt adhesion and cause variable absorption, while the back often has skin conditions or less convenient access for monitoring and patch changes. Keeping the patch on the hip helps maintain reliable delivery and reduces irritation risk.