The paper reports the case of an 11-year-old boy with sudden onset of stocking-like anaesthesia and inability to walk, without objective neurological or systemic abnormalities. Laboratory and imaging studies were unremarkable. Following a suggestive discussion about a planned diagnostic procedure, symptoms resolved spontaneously with complete motor recovery. A subsequent child neuropsychiatric evaluation confirmed a diagnosis of conversion disorder and identified a psychological trigger. This case highlights the importance of considering somatoform disorders in the differential diagnosis of acute neurological deficits in children.