CD4 and cerebellar ataxia: CD4 counts reflected this pattern, with severe depletion (<50 cells/μL) in 28.6% of hyperkinetic, 22.2% of hypokinetic, and 22.2% of ataxia patients, while higher counts (≥200 cells/μL) were more common in hypokinetic (33.3%) than in hyperkinetic (4.8%) or ataxia (not reported in over half).