My Wife Has Had Mri Test, Ct Scan With No

My wife has had mri test, ct scan with no answer as came back normal. She has been suffering like this for more than 6months with dizzy,foggy head low fatigue and feels like she is going to faint/die she has been told she has got high stigmatising in both eyes as also been suffering headaches with blurry vision constant but feel stigmatise does not answer all and feel something still not right.please help.