# A Rare Case of Herpes Zoster with C7 Involvement Mimicking Dermatitis: An Elusive Diagnosis

**Authors:** Muhammad Arslan Nizam, Amna Iqbal, Saima Chaudry, Meher Ayyazuddin, Umar Farooq

PMC · DOI: 10.15190/d.2025.20 · Discoveries · 2025-12-31

## TL;DR

A rare case of shingles affecting the C7 dermatome was initially misdiagnosed as a skin allergy due to its unusual appearance.

## Contribution

This case highlights the atypical presentation of Herpes Zoster in the C7 dermatome, leading to diagnostic challenges.

## Key findings

- Herpes Zoster presented in the C7 dermatome was misdiagnosed as contact dermatitis or scabies.
- The absence of a typical clustered rash contributed to the diagnostic delay.
- Early diagnosis and vaccination are emphasized to prevent complications.

## Abstract

Herpes Zoster commonly involves thoracic and cranial dermatomal distributions. It is caused by reactivation of the latent varicella-zoster virus (VZV) due to immunosuppression or increasing age. However, uncommon regional presentation for shingles such as the palmar creases, may lead to a misdiagnosis. We report an unusual case of C7 dermatome presentation, prematurely mistaken as contact dermatitis or scabies due to lack of a clustered appearance. Prevention with vaccination is key and so is avoiding delays in diagnosis due to late complications that may arise.

## Linked entities

- **Diseases:** Herpes Zoster (MONDO:0005609), contact dermatitis (MONDO:0005480), scabies (MONDO:0004525)

## Full-text entities

- **Diseases:** contact dermatitis (MESH:D003877), Herpes Zoster (MESH:D006562), scabies (MESH:D012532), Dermatitis (MESH:D003872)
- **Species:** Human alphaherpesvirus 3 (Varicella-zoster virus, no rank) [taxon 10335]

## Full text

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## Figures

3 figures with captions in the complete paper: https://tomesphere.com/paper/PMC12812401/full.md

## References

10 references — full list in the complete paper: https://tomesphere.com/paper/PMC12812401/full.md

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Source: https://tomesphere.com/paper/PMC12812401