Severe oral lichen planus: remission and maintenance with Vitamin A analogues

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Abstract
Twenty‐five patients with chronic oral lichen planus, usually of the atrophic‐erosive type, were treated for 2 months with Etretinate® 0.6 mg/kg b.w./day, followed for 4 months by Etretinate® 0.3 mg/kg/day, or 0.1% Tretinoin® in an adhesive base. Complete resolution or improvement was seen in 85% of the lesions after first treatment. The number of patients with oral soreness and pain was significantly reduced (p < 0.001). During the second treatment, the improvement was maintained or even increased in about 70% of the patients, irrespective of the mode of treatment. Treatment was discontinued in one patient owing to moderately increased serum transaminase levels. The number of drug‐related drop‐outs was significantly lower than in a previous study utilizing an etretinate dose of about 1 mg/kg/day (p < 0.05). Other adverse effects were minor and tolerable. Retinoids offer an effective mode of therapy for severe oral lichen planus.