suzanna, I have used the Rife Digital Ultimate and the Rife Digital Professional models to heal a lot of chronic issues. I find that as long as you follow the directions given, it works really well. I like the fact that it is lightweight and portable so I can take it on trips when I go abroad too, as that's where you can run into a lot of health problems with unclean food...parasites, food poisioning and the likes. if your son's issue is serious, use the overnight treatments on the frequency sets for those conditions. You can also use the 2 main detox frequencies (which get rid of toxins and clean the organs). I think you'll be pleased. SG