Vesicular Pityriasis Rosea In An Adult: A Case Report And Review Of The Literature

Pityriasis rosea (PR) is a common disease with a characteristic pattern. Diagnosis is clinically easy in most cases but some atypical presentations are possible. Etiology is unknown, although viruses have been suspected. We report a case of vesicular PR in an adult woman, raising the question of the differential diagnosis. She noticed a first single lesion on the abdomen considered as the herald patch followed 5 days after by a squamous and vesicular eruption of the trunk and upper limbs. She was treated with topical steroids and had 2 successive itchy flares which resolved after 6 weeks. Evolution was marked by hypopigmentation after 2 months. According to the literature, vesicular PR is a rare form of PR, occurring in 0.5 to 5.5% cases. Other diagnoses especially varicella should be excluded.