Electrostimulators for menstrual pain relief are a specific type of device that uses electrical impulses to alleviate pain associated with menstruation. They operate on the principle of Transcutaneous Electrical Nerve Stimulation (TENS). This method involves weak electrical impulses passing through the skin to stimulate nerve fibers. This stimulation has a dual effect. Firstly, according to the so-called “gate control theory of pain,” the impulses occupy nerve pathways, thereby blocking the transmission of pain signals to the brain. Secondly, the stimulation encourages the body to produce its own pain-relieving substances, known as endorphins. The device consists of a small unit and electrodes that are affixed to the skin in the lower abdominal area or the lower back. The user adjusts the intensity of the impulses as needed. Thanks to their small size and quiet operation, these devices are discreet and can be worn under clothing during normal daily activities.