Electrotherapy is a medical treatment that uses electrical energy to relieve pain, promote healing, and improve muscle function. It involves applying electrical currents to the body through various devices, such as TENS units or electrical stimulation machines. This therapy is often used in physical rehabilitation and can help with conditions like arthritis, muscle injuries, and nerve pain. The electrical currents in electrotherapy can stimulate nerves and muscles, enhancing blood circulation and reducing inflammation. It is generally considered safe when performed by trained professionals and can be tailored to individual needs, making it a versatile option in pain management and recovery.