Hi - Liza Jane had mentioned in her recent thread that ataxia was being tested, etc... I'm confused

I have seveve sensory PN, with autonomic and motor complications, and thus axaxtia - they are sure of the type of damage cause of my sural nerve biopsy of the prediominately large fiber loss and disporportionate loss of small fibers and nerve roots, it is exactly the physicial manisfestations they would expect to see . ... I was told the large fiber was the reason for the sensory and severe loss or propeciation (where my body is in space) and if Im not in the wheelchair or (rolling walker inside)- I stagger and fall all the time..... is something not making sense here? Do I need to get separate ataxia testing?????? Doesnt everyone who has sensory PN have ataxia????????