No risk of skin lesion or burn with transcranial direct current stimulation (tDCS) using standardized protocols

Maas and colleagues reported a single case of sustained cutaneous lesion (burn) following 10 daily sessions of transcranial direct current stimulation (tDCS, 2 mA × 20 min using a neuroConn constant current stimulator) [1]. The skin lesion was reported under the cathode electrode which was placed on the right arm over the deltoid muscle (extracephalic position) using a large (7 × 5 cm) rubber electrode. The Ten20 conductive paste, manually applied, was used as a conductor between the skin and the electrode.