Hi . I Have Stage 3 Ckd And Been Having

Hi . I have stage 3 ckd and been having a lot of systoms ( dizzy , nausea , unbalance ) my nep says it doesn't have anything to do with ckd . He wants me to have a MRI to see if I could have a brain tumor or MS. He says that he has not seen and patient with my gfr having systom . Do you agree??