Yes, you can get a type of short term dementia from lack of sleep, however this is not the same thing as the dementia associated with long term deterioration that the elderly display.
The general treatment for dementia is medication prescribed by the doctor(s) looking after the patient. There are other non prescription drug related treatments as well.
brain infractions
diarrhoea, dermatitis, dementia, death
Is REM sleep deprivation associated with SIDS?
the deep, dreaming part of sleep known as rapid eye movement (REM) sleep. Normally when people fall asleep, they experience 90 minutes of non-REM sleep, which is then followed by REM sleep. People with narcolepsy, however, enter REM sleep immediately
Sleep apnea
There is no evidence that Post Polis Syndrome can cause dementia, but PPS sufferers' can develop dementia which is non-related to PPS, such as Alzheimers' Disease.
rem sleep or paradoxical sleep
There are a variety of symptoms associated with dementia. Just to list a few: hallucinations, memory loss, personality changes. If you'd like more information please visit the link in the related links.
There are many different forms of dementia and the exact reasons why it occurs may not yet be fully understood. But generally speaking lack of sleep isn't in itself a cause as far as I know, although it might be a contributory factor. The NHS recommend good quality regular sleep as a precaution against developing dementia as well as maintaining good health generally.
Yes
Yes