Chronic subdural hematoma is an encapsulated collection of blood underneath the Dura, essentially characterized by the presence of a membrane. It usually occurs in the elderly considered as a sentinel event. Simple brain computed tomography is the current imaging aid of choice for the diagnosis of this entity. It should be suspected especially in patients who present with dementia syndrome. Although less frequent, it should be investigated in patients with transient neurologic deficit. There is still no consensus regarding the ideal surgical modality of treatment. The procedure that seems most recommended is closed suction drainage through burr holes. It has been controversial whether intraoperative washing of such collection improves outcomes.