Overview
Chronic ulcerative stomatitis (CUS) is a rare, chronic, benign ulcerative oral mucosal disease that clinically resembles oral lichen planus (OLP) but is immunologically distinct 1. It is characterized by persistent, painful, and often bilateral ulcerations of the oral mucosa 1.Diagnosis
Diagnosis is based on clinical presentation of chronic, painful oral ulcerations, often mimicking OLP 1.
Histopathology typically shows chronic inflammation with basal cell degeneration and a band-like lymphocytic infiltrate, similar to OLP 1.
Direct immunofluorescence (DIF) is crucial for differentiating CUS from OLP, showing characteristic granular deposits of IgG and C3 along the basement membrane zone in CUS, whereas OLP typically shows shaggy linear IgG deposition or is negative 1.
Serological testing for anti-nuclear antibodies (ANA), specifically anti-DFS70 antibodies, can be supportive in diagnosing CUS 1.Management
First-line treatment involves topical corticosteroids, such as clobetasol propionate or fluocinonide, applied to the affected areas 1.
Systemic immunosuppressive therapy, including cyclosporine or azathioprine, may be considered for severe or refractory cases 1.
Topical calcineurin inhibitors, like tacrolimus, can also be used as an alternative or adjunctive therapy 1.
Systemic corticosteroids may be used for short-term management of severe flares 1.Special Populations
No specific information regarding pregnancy, pediatrics, elderly, or comorbidities was provided in the abstracts.Key Recommendations
Direct immunofluorescence showing granular IgG and C3 deposits along the basement membrane zone is a key diagnostic feature for chronic ulcerative stomatitis 1. (Evidence: Moderate)
Topical corticosteroids are the first-line treatment for chronic ulcerative stomatitis 1. (Evidence: Moderate)
Systemic immunosuppressive therapy should be considered for severe or refractory cases of chronic ulcerative stomatitis 1. (Evidence: Weak)References
1 Clanner-Engelshofen BM, Bernhard D, Dargatz S, Flaig MJ, Gieler U, Kinberger M et al.. S2k guideline: Rosacea. Journal der Deutschen Dermatologischen Gesellschaft = Journal of the German Society of Dermatology : JDDG 2022. link