Acute cerebellar ataxia (ACA) is a self-limited syndrome that is frequently post-infectious. most commonly following Varicella infection having an autoimmune mechanism. ACA is the commonest cause of childhood ataxia. We report a 14-year-old male who presented with acute onset wide-based gait and slurring of speech with dysdiadochokinesia. https://www.soiebiologique.com/