Guillain Barre Syndrome (GBS) is a challenging pathology which diagnosis is based essentially on the clinical examination and the results of lumbar puncture. Differential diagnosis must be discussed if the clinical picture is not complete. We present the case of a patient who presented to the emergency department with symptoms evoking both GBS and spinal cord compression. The Radiology showed a diffused spinal hydatidosis. The lumbar puncture must be carefully considered. In this case, it would have exposed the patient to hydatid dissemination.