Only Homeopathy and Hering's Law of Cure will cure your son.
Conventional medical doctors are not taught Hering's Law of cure. They only know how to suppress syptoms of the skin diseases which turns the disease into the body to attact the vital organs like the brain.
If he was much younger it may have been quite possible but at this advanced age of 47 years, I'm not sure if Homeopathy can help.
Getting him to take a probiotic supplement will help.
Immediately email Dr. Rajesh Shah's Life Force Center to ask them if they can help with Homeopathy treatment.