A clonidine patch is associated with similar systemic effects to other routes of administration. What additional consideration is noted?

• A. Localised skin reactions may occur and are common with patches
• B. Patch has no adverse effects
• C. Patch yields completely different adverse effects
• D. Patch is less effective systemically

Answer: (A)

Transdermal clonidine delivers the drug steadily into the bloodstream, so the systemic effects you’d expect are similar to those seen with other routes. An additional, practical point with patches is what happens at the application site. Localised skin reactions—redness, itching, or irritation at the patch site—are common and important to recognize. These reactions aren’t the same as the drug’s systemic effects, but they can affect adherence and continuation of therapy. To minimize this, choose clean, dry, non-irritated skin and rotate patch sites, press firmly to maintain adhesion, and monitor for dermatitis. If a severe or persistent skin reaction occurs, remove the patch and discuss alternatives with the clinician.