Unique clinical presentations of pityriasis rosea: Aphthous ulcers, vesicles and inverse distribution of lesions

Pityriasis Rosea (PR) is a common skin disorder encountered in daily practice. Although its etiology has not been established, there has been widespread research into possibilities. The lack of its characteristic manifestations, specifically the herald patch and truncal involvement, can lead to pitfalls in diagnosis. Whereas other conditions in the differential diagnosis should be considered, PR can at times also manifest in an atypical manner. We wish to illustrate three cases of PR including those that presented with aphthous ulcers, vesicles, and an inverse pattern.