Cerebellar syndrome: do not miss anti-Tr antibodies testing.

We report a case of a 19-year-old woman with a subacute onset of visual disturbance and gait instability in the last three months. The neurological examination revealed horizontal nystagmus in the lateral gaze with a change of phase. The patient also described double vision in various gaze positions, with no clear opthalmoparesis. In her next visits to our clinic, the symptoms had progressed. In this presentation, we discuss the approach of subacute cerebellar ataxia in a young adult patient.