Since the development of pharmacoconvulsive therapy in 1934 and of electroconvulsive therapy (ECT) in 1938, ECT has proven far more valuable than just the intervention of last resort. In comparison with psychotropic medications, we now know that ECT can act more effectively and more rapidly, with substantial clinical improvement that is often seen after only a few treatments. This is especially true for severely ill patients -- those with severe major depression with psychotic features, acute mania with psychotic features, or catatonia. For patients who are physically debilitated, elderly,...