Delirium and dementia are neurocognitive syndromes, where delusions are false or erroneous beliefs, which are not based on any evidence, and dementia is a progressive loss of brain function.
Cognitive disorders are the type of psychological disorders that affect our ability to learn, logical reasoning, memorizing, and perception. Delirium is understood as a false belief or idea that the patient accepts with total conviction, which is not based on any evidence and dementia is the progressive deterioration of mental faculties such as memory, thought and behavior.
On the other hand, there are several types of dementias, of which the most frequent is Alzheimer's disease, in neurodegenerative diseases delirium, paranoia and hallucinations also appear.
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