Review the changing vesicular-rash pattern and determine how infection-control measures should change.
Trend
Choose your responses, then check the answer.
Explanation
A unilateral dermatomal eruption that becomes widespread is no longer localized zoster. New lesions in noncontiguous areas with fever indicate possible disseminated herpes zoster, which can spread through contact with vesicular fluid and airborne particles. The nurse should initiate Airborne plus Contact Precautions, arrange an airborne infection isolation room, cover lesions when feasible, notify infection prevention, and review susceptible exposures. Transport should be limited to medically necessary purposes with source-control measures according to policy.
Correct Answer The trend indicates progression from localized to disseminated herpes zoster.
Why It Fits New vesicles appear outside the original dermatome and are accompanied by systemic symptoms.
Clinical Picture Disseminated zoster requires both airborne and contact controls rather than lesion coverage alone.
Memory Link Zoster beyond one dermatome changes the air and contact plan.
NCLEX Rule Suspected disseminated herpes zoster is managed with Standard, Airborne, and Contact Precautions until lesions are dry and crusted and the diagnosis is clarified.
Why the Alternatives Fail Continuing only routine room placement, opening the door, or delaying precautions for laboratory confirmation permits avoidable exposure.
Sources
1CDC Transmission-Based Precautions
2CDC Varicella-Zoster Virus Infection Control
3NCSBN 2026 NCLEX-RN Test Plan
Medical unitAn immunocompetent adult is admitted with a painful vesicular eruption limited to the right T8 dermatome. The lesions are covered. The nurse monitors for progression while antiviral treatment is started.
Dermatome — An area of skin supplied primarily by sensory fibers from one spinal nerve root.
Disseminated herpes zoster — Varicella-zoster reactivation with lesions extending beyond the primary or adjacent dermatomes, raising airborne and contact transmission concerns.
AIIR — An airborne infection isolation room designed to contain infectious airborne particles.