Abstract: Dengue encephalitis with cranial mononeuropathy is a rare entity. Imaging being non-specific, diagnosis of the condition relies on detection of NS1 antigen and IgM antibodies in CSF. Treatment relies on maintenance of airways, adequate hydration and nutrition along with monitoring of vitals without any need of antivirals or antibiotics. Prompt recognition of the condition is necessary firstly due to the potential mortality associated with the condition and secondly to avoid unnecessary administration of drugs. Here we report a case of 25 year old female who presented with fever, vomiting and altered sensorium, had an isolated left 3rd nerve palsy, was investigated to have dengue encephalitis accounting for the same, was managed conservatively, discharged with stable vitals and resolution of the symptoms and normalisation of lab parameters.