2.1
Auditory hallucinations are when you hear sounds that do not exist (such as hearing voices). They are often symptoms of mental health problems such as schizophrenia, bipolar disorder, major depression and post-traumatic stress disorder. However, they may also be symptoms of temporal lobe epilepsy, dementia, neurological infections and brain tumours. And they are sometimes caused by lack of sleep, extreme hunger, or the use of recreational or prescribed drugs.