Which current is used in electrotherapy and includes ions?

Galvanic current is indeed the correct choice when identifying a current used in electrotherapy that involves ions. This type of current is a direct current (DC) that produces a chemical effect by driving ions from the anode (positive electrode) and cathode (negative electrode) into the skin or underlying tissues. It promotes various physiological effects, such as enhancing product penetration, stimulating tissue repair, and improving blood circulation.

The unique characteristic of galvanic current is its ability to facilitate ion movement due to its continuous flow, which is fundamental for treatments like iontophoresis. This process uses electrical energy to introduce charged substances through the skin.

In contrast, other currents mentioned do not primarily focus on ion movement. For instance, interferential current, while therapeutic in pain relief and muscle stimulation, involves alternate currents that do not directly transport ions in the same manner. Cathodic current refers to the negative pole in electrical stimulation, primarily highlighting its position rather than its unique properties related to ion transfer. Faradic current uses alternating currents (AC) for muscle contraction, which serves different therapeutic goals without directly influencing ion movement.

Hence, the prominence of ion interaction in galvanic current makes it distinctly valuable in electrotherapy applications focused on chemical effects within the skin