Neurocritical care is the intensive care management of patients with life-threatening neurological and neurosurgical illnesses such as massive stroke, bleeding in or around the brain (subarachnoid hemorrhage, intracerebral hemorrhage, subdural hemorrhage, intraventricular hemorrhage), brain tumors, brain trauma, status epilepticus, nerve and muscle diseases (myasthenia gravis, Guillain-Barre Syndrome), spinal cord disorders and the cardiopulmonary complications of brain injury. Neurocritical care provides the interface between the brain and other organ systems in the setting of critical illness. Patients are taken care of within a single specialized unit. Neurocritical care units specialize in managing the unique needs of such critically ill patients.