A new technique of low-frequency modulated electric current therapy, SCENAR 
therapy, was used in treatment of 103 patients with duodenal ulcer (DU). The 
influence of SCENAR therapy on the main clinical and functional indices of a DU 
relapse was studied. It was shown that SCENAR therapy, which influences 
disturbed mechanisms of adaptive regulation and self-regulation, led to positive 
changes in most of the parameters under study. Addition of SCENAR therapy to the 
complex conventional pharmacotherapy fastened ulcer healing, increased the 
effectiveness of Helicobacter pylori eradication, and improved the condition of 
the gastroduodenal mucosa.