The present invention relates to an apparatus and to a method for rapid suppression of acute and chronic pain which can be used also in the paediatric field or with particular forms of pain such as chemotherapy induced peripheral neuropathy (CIPN) and neuralgias that affect the eye bulb and is in general particularly useful and effective in regard to pains of high degree and/or resistant to other analgesics such as opiates or other forms of conventional electro analgesia such as transcutaneous electrical nerve stimulators (TENS) and implanted stimulators. According to the present invention strings of synthetic "non pain" information of considerable effectiveness are generated such as to enable a high reproducibility of the clinical result. The synthesis is made by combining new geometries of waveforms and new modulations in complex sequences perceived instantaneously as "self" and as "non pain" by the CN. S.