BACKGROUND: Cerebral venous sinus thrombosis (CVST) is a very uncommon type of venous thromboembolism. Cerebral venous thrombosis can manifest as headache, focal neurological deficit, benign intracranial hypertension, subarachnoid haemorrhage, seizures, unexplained altered sensorium, and meningoencephalitis. The diagnosis of cerebral venous sinus thrombosis is complicated by variable symptoms and risk factors associated with it. The diagnosis is commonly delayed and may vary from onset of symptoms to diagnosis in approximately by 1 week. Thus, a high index of suspicion is essential to diagnose it.

CASE PRESENTATION: We report a 42-year-old male with CVT who presented with a headache without any localizing signs.NCCT brain revealed bilateral chronic subdural haematoma with MR venogram showing filling defects in superior sagittal sinus, right transverse and sigmoid sinus. CONCLUSION: Our case reports highlight the fact that a high degree of suspicion for CVT should always be kept in mind while dealing with a patient presenting with non-traumatic spontaneous SDH, particularly in the absence of common etiological factors