MS-1760

A 57-year-old woman comes to you complaining of an itchy rash on her back and tummy that she noticed this morning. She has a medical history of diabetes, hypertension, stage II chronic kidney disease, and atrial fibrillation. During the examination, you observe a single stripe of vesicular rash extending from the mid-back to the abdomen. You prescribe a 5-day course of acyclovir and provide her with some crucial advice before discharging her.

What important advice do you give her?