A nurse is teaching a client who has herpes zoster. Which of the following statements should the nurse make?

Rationale: A. "You should expect your blisters to last up to three weeks.": Herpes zoster lesions typically last 7 to 10 days, with crusting and healing often occurring within 2 weeks. While some cases may extend slightly longer, stating "up to three weeks" may overgeneralize and mislead. B. "Antiviral medications are most effective if taken within the first 72 hours of symptoms.": Antiviral drugs like acyclovir or valacyclovir are most effective when initiated within 72 hours of symptom onset. Early treatment reduces severity, duration, and the risk of complications such as postherpetic neuralgia. C. "People who have had chicken pox are at a decreased risk for herpes zoster.": Herpes zoster occurs due to reactivation of the varicella-zoster virus, which remains dormant after chickenpox. Therefore, individuals who have had chickenpox are actually at increased risk. D. "Severe pain after the blisters are gone is less common in older adults.": Older adults are more likely to experience postherpetic neuralgia, a complication involving persistent nerve pain after lesions resolve. The risk and severity of this pain increase with age, not decrease.