INTRODUCTION : Dengue is the frequent human arboviral infection, with 50 million cases per year , according to 0MS, it can present as dengue fever (DC), a self-limiting disease, as dengue hemorrhagic fever (FHD), or as a syndromedengue shock (SCD). CASE REPORT : A 8 years and 10 months old patient, male, he was born in Sobral - Ceará, he had petechiae all over the body , nausea , vomiting , fever and severe headache . In seven days the patient developed seizures, decreased level of consciousness and respiratory failure, which required mechanical ventilatory support. With hypothesis  of bacterial meningoencephalitis started empirically with ceftriaxone, unsuccessfullu. Two cerebrospinalfluid analysis incompatible with bacterial infection. Cranial computed tomography without contrast  identified hypodense lesion in the angular gyrus of the right parietal region being interrogated encephalitis. Postulated herpetic viral meningoencephalitis and aas treated with acyclovir and anticonvulsants with slow and progressive improvement. After positive IgM serology for dengue, the conclusion was dengue with neurological complications. He was discharged with the use of oxcarbazepine and clobazam. DISCUSSION: Neurological manifestations can arise in acute dengue as headache, restlessness and irritability , and rarely respiratory depression, seizures and lowering of consciousness occur. The latter are often attributed to other CNS disorders and so many other diagnoses are suspected, making diagnosis difficult. Therefore, neurological complications of dengue always should be thought when the occurrence of these signs/symptoms associated with other common manifestations of dengue.