My 90 year old Mom forgot we gave her and my Dad $100 for Thanksgiving. Is this dementia or maybe she was distracted when we told her?

My mom and dad is a lot younger than 90 and I can tell you they forget when I give them Christmas gifts.

No worries. It is normal.

She's 90. There's going to be a certain amount of cognitive decline, but forgetting one thing is hardly a diagnosis of dementia. (I'm 59 and can't remember what I had for dinner last night.)

Have her physician check her out if you have any concerns, but forgetting one thing isn't indicative of anything.

One instance doesn’t make dementia. Have there been other signs that concern you?

I certainly would remember if someone gave me $100. But you're jumping the gun here. What other instances of “forgetfulness” or confusion or difficulty with normal daily living have you witnessed? Dementia is not only not remembering something, it is much more. If you're concerned, have your mom's PCP administer a basic dementia test. If he/she suspects dementia she would be referred to a neurologist for further evaluation.