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Pityriasis rosea manifesting only with a herald patch
Francesco Drago1, Serena Varesano2, Astrid Herzum3
1Dermatology Clinic, Villa Montallegro Health Clinic, Genoa.
Dermatology Reports
|May 20, 2025
Summary
Pityriasis rosea (PR) is a skin condition triggered by human herpesvirus (HHV)-6/7 reactivation. This study investigates rare cases where PR presents only as a herald patch, offering insights into atypical presentations.
Area of Science:
- Dermatology
- Virology
- Immunology
Background:
- Pityriasis rosea (PR) is an acute, self-limited exanthematous disease.
- PR is linked to human herpesvirus (HHV)-6 and/or HHV-7 reactivation.
- The typical presentation involves a herald patch followed by a generalized eruption.
Purpose of the Study:
- To investigate the clinical and laboratory features of atypical Pityriasis rosea.
- To explore rare cases of PR limited solely to the herald patch.
Main Methods:
- Literature review of atypical PR cases.
- Analysis of clinical presentations and laboratory findings.
Main Results:
- Atypical PR presentations, particularly those limited to the herald patch, are rare.
- Limited data exists on the specific characteristics of these unusual cases.
Conclusions:
- Further research is needed to understand the clinical and laboratory spectrum of atypical Pityriasis rosea.
- Understanding these rare forms can improve diagnostic accuracy and patient management.
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