What happens when a person with narcissistic personality disorder shows signs of Alzheimer’s?

Identifying dementia in a narcissist, especially in its earlier phases, is difficult. Narcissists may use gaslighting to deal with memory loss. This behaviour makes it harder to differentiate between the two.
During the first stages of dementia, narcissists accuse others of being forgetful. Unfortunately, such behaviour is also an expected outcome of aging. So, it is not a reliable symptom of Alzheimer’s. As a narcissist’s cognitive abilities diminish, you must observe their behaviour to spot changes.
When their condition worsens, narcissists may try to save their ego by not insisting on blaming others. Once their situation becomes severe, they can develop serious suicidal tendencies. Since narcissists can no longer care for themselves, they may shut down and behave like non-narcissistic people. Families might mistake this behaviour as a sign of progress without realizing the severity of the patient’s dementia. Other symptoms include:
• Paranoid delusions
Their reactions to such illusions are so convincing that they may draw you into their delusional state.
• Anger outbursts
unexpected flies of anger are common among narcissists with dementia. If your loved ones suddenly develop such selfish behaviour, it can indicate they have dementia.