Lyon, D., Kelly, D., Walter, J., Bear, H., Thacker, L., & Elswick, R.K. (2015). Randomized sham controlled trial of cranial microcurrent stimulation for symptoms of depression, anxiety, pain, fatigue and sleep disturbances in women receiving chemotherapy for early-stage breast cancer. Springerplus, 4, 369-015-1151-z.
To examine the effects of cranial stimulation on symptoms
Women were randomly assigned to receive actual or sham cranial stimulation. The device passed biphasic electrical stimulation via ear lobe electrodes. The active device was preset to deliver maximum stimulation at 0.5 Hz and 100 µA, the lowest setting below the level of perception. The sham device was identical but did not transmit a current. Patients were instructed to use the device daily for one hour during chemotherapy treatment and for two weeks after treatment cessation. Symptom data were collected weekly, and patients completed logs to record stimulator use.
Double-blinded, randomized, sham-controlled trial
There were no statistically significant differences in levels of depression, anxiety, pain, fatigue, or sleep at any time point during the study. Symptom levels were low. Anxiety was highest at baseline and decreased over time. Depression and fatigue increased over time.
This study did not demonstrate any benefit of microcurrent cranial stimulation in the management of pain, anxiety, depression, fatigue, or sleep disturbance among women receiving chemotherapy for breast cancer.
Cranial stimulation did not benefit symptom management in this study.