Transient improvement of essential tremor during electroconvulsive therapy.

We present a patient who demonstrated transient yet significant improvement of essential tremor (ET) during electroconvulsive therapy. To our knowledge, this is the first such report. The improvement lasted during the course of electroconvulsive therapy and was of a similar magnitude to that which she had experienced on a first-line medication for ET. We discuss the potential pathophysiological implications of this observation in light of recent histopathologic findings in patients with ET.