Solitary pityriasis versicolor an uncommon presentation as a large single patch Report of three cases and review of unusual clinical forms

Abstract

Pityriasis versicolor (PV) is a common disease, easy recognizable, that usually affects the trunk and upper limbs with multiple rounded scaly lesions which can vary in color from case to case. However, infrequent localizations have been reported, as well as diverse unusual clinical presentations, including atrophic, hyperkeratotic, annular, or inverse forms, among other. We describe 3 cases presenting with a single large lesion in the neck, which can hinder the diagnosis. No description of this form was found neither in large series of PV, nor in extensive reviews. This solitary variety would be just another atypical clinical presentation of PV. Clinicians should be aware of this variety in order to avoid unnecessary studies.