Dementia is a broad category of brain diseases that cause long term loss of the ability to think and reason clearly. It can be said that psychosis is in fact a symptom of an illness. Dementia can cause psychosis.

The human mind is a fragile thing; while it is capable of great things, there are also various factors that may have an impact on its functioning. When a brain is not functioning as it used to, or there is an abnormality in the way the brain functions, it is called Psychosis.

It can be said that psychosis is in fact a symptom of a variety of illnesses, including dementia. Psychosis essentially refers to when the patient has "loss of contact with reality". People who are diagnosed with psychosis may experience personality changes, thought disorder, problems with social interaction, problems carrying out daily life activities. Some people with advanced psychosis may even experience hallucinations, delusions, sometimes violence, and impaired insight or understanding.

Psychosis can be caused by a variety of conditions, including but not limited to schizophrenia disorders, delusional disorders, bipolar disorder, personality disorders, brain tumor or cyst, neurological illnesses, HIV and other infections, epilepsy, stroke, genetics, dementia, etc.

Dementia is a broad category of brain diseases. It can cause long term loss of the ability to think and reason clearly. This loss of ability may be so severe that it may affect a person's daily functioning.

Comparison between Dementia and Psychosis: