What illnesses can cause ataxia and hyperreflexia?

Here are a few: May see with spinocerebellar degenerations, such a freidrich's ataxia, not unique to find in multiple sclerosis, might see with von hippel lindau syndrome, sometimes occurs with lupus, vasculitis, sjogren's. Occasionally a meningioma at the base of brain can present this way. Some brainstem strokes do this. Might go to wikepedia, or a site such as mayo clinic, as more information in depth there.