Pityriasis rosea revealing a viral Hepatitis B

Résumé

Pityriasis rosea, described by Gibert in 1860, is a frequent, benign, transient dermatosis, with unknown etiology that affects especially young adults. It is believed to be a consequence of a viral infection, but this argument is not convincing. We report a case of Pityriasis Rosea from Gilbert (PRG) revealing viral hepatitis B. Observation: This was a 47-year-old adult from Diago (commune of Kati), with no known medical and surgical history, who was seen for pink spots scattered throughout the trunk associated with pruritus in which the retained diagnosis was PRG. He have given vaseline with urea 5%, and Mequitazine10mg  as treatment. Facing the persistence of this pruritus despite this treatment, a biological investigation was done to look for probable etiology was requested and this led to the diagnosis of an infection with the hepatitis B virus. Conclusion: this observation should lead dermatologists to systematically search for hepatitis B viral infection when facing a PRGs that are very pruriginous and resistant to the usual treatments.

Mots clés : Pityriasis rosea, Viral hepatis B