Suggest Treatment For Recurring Headache

My husband has been having headaches for 3 months now. The pain is in the back of the head on the left side. A Ear, Nose and Throat doctor and a neurologist have run a spinal tap, MRI's, Cat scans, vision test, etc. to find the cause. The only thing they have come up with is that he has an elevation of high protien level in his spinal fluid. His is 88 and the normal is 44. They still cannot diagnose exactly what is going on,. We may need to go to the Mayo Clinic. We are from Louisiana.