10. Oblivious to Joke and Sarcasm.
It can be a challenge when your friend or loved one all of a sudden loses their sense of humor. However, an early sign of dementia can be evident when the individual no longer can comprehend a joke, sarcasm, or even a simple lie. This is something that can be troublesome for the individual affected and it can cause them to have anxiety and more confusion. Consider straying from jokes, sarcasm, and lies to friends and family if they have dementia or are at risk for early dementia. Consider talking with your doctor about this important warning sign to help with the diagnosis process.