Abstract : Cerebral thrombophlebitis is a rare but serious complication of pregnancy and postpartum. This condition is characterized by a misleading symptomatology. It must be systematically discussed in case of the persistence of a headache in the aftermath of childbirth and the diagnosis must be confirmed early with the help of computed tomography and cerebral magnetic resonance. NMR is the reference examination. The treatment is essentially based on anticoagulants. The functional prognosis remains good if the diagnosis is made in time and the treatment is initiated early. We report the case of a young 25-year-old woman who presented postpartum cerebral thrombophlebitis with a late diagnosis. The evolution was marked by severe neurological sequelae. This is why we emphasize the interest of imaging in the early diagnosis of this pathology.