Dermoscopic patterns of filiform papillae of the tongue in patients with and without connective tissue autoimmune diseases.

BACKGROUND: Connective tissue autoimmune diseases (CTADs) constitute a group of conditions, including rheumatoid arthritis; systemic lupus erythematosus; mixed connective tissue disease; calcinosis, Raynaud's phenomenon, esophageal dysmotility, sclerodactyly, and telangiectasia (CREST) syndrome; scleroderma; dermatomyositis; and Sjögren syndrome. There are few studies on the alterations in filiform papillae in CTAD. Thus, the objective of this work was to determine whether there are changes in the macroscopic and dermoscopic patterns of filiform papillae.

METHODS: This case-control study included patients who were diagnosed with CTAD. The dependent variable was the dermoscopic pattern of filiform papillae of the tongue, and the independent variables were age, gender, time of evolution, and current treatment. A photograph of the back of the tongue was taken, and subsequently, the same site was examined by dermatoscopy. The microscopic and dermoscopic patterns of filiform papillae were classified (Maeda).

RESULTS: We included 50 cases and 50 controls, 94% of whom were female. The mean age was 43.96 ± 14.65 years. Of the cases with CTAD, 25% presented with a normal macroscopic pattern, versus 36% (18) with pattern II, 12% (6) with pattern III, and 20% (10) with pattern IV. The dermoscopic pattern was type I in 23 cases (46%), type II in 16 (32%), type III in 10 (20%), and type IV in one patient (2%).

CONCLUSIONS: We have noted alterations in filiform papillae in CTADs, which emphasizes the importance of a detailed intraoral exploration and the macroscopic and dermoscopic evaluation of the dorsum of the tongue, specifically the filiform papillae.