Interferential therapy is a type of electrical stimulation therapy that is used to help manage chronic pain, improve circulation, and reduce muscle spasms. This therapy involves the use of two low-frequency electrical currents that are applied to the skin over the area of pain or discomfort. The currents interfere with each other, creating a third, higher-frequency current that is able to penetrate deeper into the tissue and stimulate the underlying nerves.

Interferential therapy is often used to treat chronic pain conditions such as back pain, arthritis, and neuropathy. It can also be helpful for reducing muscle spasms and improving circulation in the affected area. This therapy is generally well tolerated and has few side effects, making it a safe and effective treatment option for many people.