Generally, the etiology of dementia is brain neuronal loss. It occurs due to neuronal degeneration or to cell death secondary to trauma, infarction, hypoxia, infection, or hydrocephalus.
In other words, dementia generally results from damage to or disruptions of brain cells, particularly in the cerebral cortex (the part of the brain which controls memory, perception, consciousness, and language). In some cases, this damage or disruption isn't permanent, causing reversible conditions that can be slowed or cured. While in others, dementia cannot be cured.
Keywords: dementia etiology