###Human: Is it normal to hear voices continuously which others cannot hear? ###Assistant: Hello. This symptom of hearing things when there is no sound is known as an auditory hallucination. At his age, there could be a number of causes of the same as: 1. A stroke which has affected the blood supply of the part of the brain responsible for hearing. This is likely if he has untreated hypertension. 2. If there are other complaints like forgetfulness, not remembering names or recent events, or anger and sleep disturbances, along with this hallucination, then it could be dementia. 3. Old age psychosis or depression with psychotic features. This auditory hallucination is just a symptom caused by an underlying disorder. It is advisable that you see a neurologist who will be able to investigate and diagnose the underlying cause and treat accordingly. The treatment will differ depending upon the cause of this symptom. It is advisable that you take treatment from an experienced neurologist because, during this age, the patient is very sensitive to side-effects. Take care.