During the entire 10 day trial, the SCS did wonders . I kept a daily journal and its effectiveness was around 90%. But when the trial was complete and they did the implant, the effectiveness dropped to where it is now, approx 10 to 15%, a drastic drop. So far, ive had 6 adjustments but none have helped. Im told by my physical therapist to keep going back for adjustments til they get it right but i get frustrated. Sorry it didnt work for your friends son.