Cranial Electrical Stimulation: What Is It, and Should We Use It in Practice?

Cranial electrical stimulation (CES) is a form of brain stimulation that uses low levels of alternating current. The review by Shekelle and colleagues found limited and inconclusive evidence from randomized trials on the effectiveness and safety of CES for chronic pain, depression, anxiety, and insomnia. The editorialist discusses the findings and wonders whether the failure to demonstrate efficacy is due to inadequate studies or true lack of effectiveness. Regardless, he believes that this review should caution clinicians and patients to be more circumspect in CES use.

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