Spinal subdural hematoma (SDH) following a cranial surgery is extremely rare. We described a 26-year-old patient who developed an SDH at L3-S1 level after the excision of intraventricular meningioma. He was surgically treated with an excellent outcome. It is postulated that the SDH resulted from downward migration of intracranial hematoma. A case of spontaneous, atraumatic subdural haematoma involving thoracic region in a 78-year-old woman on an anticoagulant therapy (Warfarin) for atrial fibrillation presented. This patient initially presented with sudden onset headache and giddiness (signs of increased intracranial pressure) followed by an acute onset neuro-deficit in lower limb. After appropriate investigations she was treated with an emergency surgical decompression of involved spinal segment. Post-operatively the patients had complete neurological recovery. Spontaneous spinal subdural haematoma as a result of an anticoagulant therapy is a rare cause of spinal cord compression. Subdural haematoma as a result of other causes like haematological disorders, arterio-venous malformation, meningioma and repeated attempts at lumbar punctures has been reported quite often in the literature.