Could leprosy reaction episodes be exacerbated by oral infections?

This study evaluated whether leprosy reactions could be associated with oral infection. Leprosy patients (n = 38) with (Group I) and without (Group II) oral infections were selected. Reactions were identified from the clinical and histopathological features associated with serum C-reactive protein (CRP) and10kDa interferon-gamma-induced protein (IP-10) levels, determined before and after elimination of the foci of infection. Group I presented more reactions than group II did, and improvement of the reactions after dental treatment. Serum CRP and IP-10 did not differ before and after the dental treatment, but differed between the groups. Oral infection could be an exacerbating factor in leprosy reactions.