Tehran University of Medical Sciences Case Reports in Clinical Practice 2538-2683 10 4 2026 04 18 191 194 Kriti Maheshwari Department of Dermatology, Yashoda Medicity, Ghaziabad, India. Amandeep Saluja Department of Dermatology, Venereology and Leprosy, Indira Gandhi Hospital, New Delhi, India. 2025 12 04 2025 12 16 Herpes zoster is a viral infection caused by the reactivation of the varicella zoster virus. It usually presents with vesiculobullous lesions along a single dermatome. Disseminated herpes zoster (DHZ) is said to occur when there are more than 20 lesions outside the primarily affected dermatome. Cases of DHZ have been reported in elderly patients and those with states of immunosuppression such as HIV infections, cancer, post-COVID-19 infections, or patients on immunosuppressive drugs. However, here the authors are reporting a rare case of extensive cutaneous dissemination of herpes zoster in a young, healthy, immunocompetent male without any other comorbidities, treated successfully with intravenous acyclovir. https://crcp.tums.ac.ir/index.php/crcp/article/view/1150 https://crcp.tums.ac.ir/index.php/crcp/article/download/1150/744