Q. Are hallucinations reason enough to see a doctor?
Hallucinations can be a symptom of a variety of problems both physical and mental. They can be caused by schizophrenia, dementia, depression, Parkinson's disease, stroke, fever, drugs, and alcohol. You should see a doctor immediately about this symptom.
Visual loss is a common cause of hallucinations, too. About one in 10 people with vision problems has hallucinations. It is suspected that this phenomenon is underreported because victims fear they are losing their minds and don't want their doctors to know.