Is it life-threatening for the elderly to babble and hallucinate? This is not necessarily the case and depends on the condition. It is common in the following diseases: a. When chronic obstructive pulmonary disease is complicated by pulmonary encephalopathy, carbon dioxide retention can cause this symptom, if ventilated with mechanical ventilation, it is usually not life-threatening. Hyponatremic encephalopathy, when the blood sodium is low, can appear this symptom, give sodium supplementation treatment can generally be restored to normal. Diabetic patients with hypoglycemic reactions after taking hypoglycemic drugs orally should be able to return to normal after intravenous glucose supplementation treatment. The symptoms caused by cerebrovascular disease depend on the severity of the disease. If the infarction or bleeding area of the brainstem is large, the symptoms may be life-threatening. If a patient with cerebral atrophy has this kind of nonsense and hallucination at night, it is usually not life-threatening.