# Zosteriform Dissemination of Molluscum Contagiosum Infection Diagnosed in an Immunocompetent Girl: A Rare Clinical Presentation

## TL;DR

A rare case of molluscum contagiosum infection with a zosteriform pattern was found in an immunocompetent girl, likely due to scratching.

## Contribution

This report adds a rare clinical presentation of molluscum contagiosum in an immunocompetent individual to the medical literature.

## Key findings

- Molluscum contagiosum presented in a zosteriform pattern in an immunocompetent girl.
- The unusual distribution was attributed to the Koebner phenomenon caused by scratching.
- Such a presentation has been documented only twice before in medical literature.

## Abstract

Molluscum contagiosum (MC) is a benign, self‐limiting infectious lesion that primarily affects children and young adults, especially those with immunodeficiency. MC is caused by a poxvirus from the Molluscipoxvirus genus of the Poxviridae family. Diagnosis is mainly clinical, with lesions presenting as dome‐shaped, spherical, solid, flesh‐colored, pearly papules with central umbilication. MC commonly appears on the limbs, face, trunk, and axillary regions. The differential diagnosis includes inflammatory, infectious, and neoplastic causes, varying by age and immunological condition. This case report presents a rare zosteriform distribution of MC infection in an immunocompetent girl, a presentation described only twice in medical literature. The unusual distribution resulted from scratching, a process known as the Koebner phenomenon (pseudo‐koebnerization).