TENS (Transcutaneous electrical nerve stimulation) and EMS (Electrical Muscle Stimulation) machines are devices that generate an electrical current, which stimulates the nerves by creating pulses for the purpose of treating pain.
Electrical muscle stimulation (EMS) is a type of electrotherapy that stimulates a muscle contraction using electrical impulses in order to strengthen weak muscles, reduce swelling, relieve pain and help heal wounds.
Transcutaneous Electrical Nerve Stimulation (TENS) is a method of electrical stimulation which aims to provide pain relief by stimulating the sensory nerves and modulating pain using electrical impulses. TENS is an alternative to drug treatment as it is a non-invasive treatment technique that has few side effects.