Oral psoriasis: an atypical case

Abstract

-Psoriasis is a chronic cutaneous inflammatory disease. We describe the case of a 60-year-old woman presenting both general psoriasis and oral erythemato-erosive lesions. History and histopathology of the lesions tend to prouve a link with her general psoriasis. Local applications of betamethasone provides rapid improvement of the symptomatology. Oral lesions of psoriasis are rare and controversial. There is some evidences that fissurated or geographic tongue present a statistical correlation with skin psoriasis. Our case present unusual features which were never described so far and that could be source of misdiagnosis.

Isolated lip involvement in psoriasis: an uncommon aspect of a common dermatologic condition

“…It is a frequently occurring disorder with a chronic and relapsing course. Approximately 1-3% of the global population is affected with an equal gender distribution [2]. It is characterized by erythematous papules covered by silvery scales that gradually enlarge at the periphery, forming plaques.…”

“…The disease may occasionally involve genitalia and the anus. Although cutaneous lesions are generally sufficiently distinct to make a diagnosis, diagnostic difficulties can be found in cases of unusual involvement such us an oral location [2,3]. Indeed, oral psoriasis is a rare entity and remains a subject of controversy.…”

“…Geographic tongue and geographic stomatitis may be an oral manifestation of psoriatic disease, presenting histopathological, immunohistochemical and genetic similarities with plaque psoriasis [4]. Unfortunately, their link with psoriasis remains unproven [2].…”

“…Additionally, HLA typing has also been considered of great importance in supporting a diagnosis of oral psoriasis. The HLA antigens most frequently associated with psoriasis are B13, B17, B37, Cw4 and Cw6 [2,5].…”