Abstract
Electroconvulsive therapy (ECT) has been used for intractable chronic pain. We compared the mental health state of chronic pain patients with ECT (n=37) and of those without it (n=37) to learn if intractable chronic pain deteriorates mental health. The Cornell medical index and Hamilton's rating scale for depression were used. As a result, we found that ECT patients are neurotic and in moderate to severe depression. They need more intensive psychological support than the non-ECT patients do.