What is the term for alternating electrical currents producing localized nonspecific heat in the skin layers?

The term for alternating electrical currents producing localized nonspecific heat in the skin layers is radio frequency current. This type of current utilizes electromagnetic energy to generate heat within the deeper layers of the skin, which can promote collagen production, improve skin elasticity, and assist in overall skin rejuvenation. The alternating current creates a thermal effect that can enhance circulation and stimulate the metabolic activity within the dermis.

In contrast, ultrasound refers to high-frequency sound waves used for various therapeutic and aesthetic treatments but does not specifically pertain to electrical currents. Galvanic current involves a direct current that is often used for iontophoresis and transdermal infusion but does not produce the localized heating effect described in the question. Direct current provides a unidirectional flow of electricity and is not associated with the alternating current needed to create non-specific heat in the skin layers.