Hello I Am Asking On Behalf Of My Friend. He

Hello I am asking on behalf of my friend. He is 63 years old, has lost approximately 40 lbs in a month, has joint pain, muscle weakness, headaches,fever, feeling of pressure in his head, numbness and tingling in arms and hands. Has difficulty walking and has no appetite. He has seen 3 Dr.'s here and xrays, MRI, bloodworm urine sample and a host of other tests. They have not found anything. Any help would be appreciated.