I had the Stimwave test on march 26. It was great and the difference in my lumbar and cervical pain and mobility was stunning. I am having the implant next Friday the 19th. Many people have said complaints about constant itching or tingling. I did all the research about side effects and complications prior to the test, and read a lot of replies. I discussed all of it with the Stimwave rep prior to the actual procedure. He has a little computer pad that he makes all the adjustments on after the implant. It is really important that you have a good, knowledgeable rep, who can eliminate all of the side effects by his adjustments. Of course, you also use have a very good spine surgeon. I had no issues whatsoever, and I am looking forward to the final implant Friday. good luck.