[A post-traumatic locked-in syndrome with delayed onset].

We report a case of locked-in syndrome occurring two days after a cranio-cervical trauma in a 28 years old male patient. It was a consequence of basilar thrombosis after left vertebral artery dissection secondary to a vertebral fracture at the C6 level. Decerebrate rigidity and apparent unconsciousness led to misdiagnosing it for post traumatic coma. It took several days to correct this mistake. To avoid this pitfall, we insist on the clinical features of this syndrome and discuss which investigations are needed and which therapy is available.