I am very worried recently I am only 24 years old and i feel over the last few weeks that my memory has become bad especially my short term memory. Also i have been doing some weird things, for example 2-3 years ago i was with a girl who wore a arm support as she had reptitive wrist strain, now i am with someone else and today i saw something similair and i though it was that arm wrist support thing even though my wife does not have one and i split up from my ex around 18 months ago, that to me is very weird. Also sometimes some people have to say things to me about 2-3 times before i fully understand, my hearing is not that good but i think it's something to do with my brain. I know dementia usually occurs in over 65's and sometimes in the 50's and 60's but i also know it is not unheard of for someone in their 20's or 30's to develop dementia but i hardly drink alcohol, stopped smoking 4 years ago and don't touch drugs, maybe i could have an inherited brain disease or something? I am very worried and really need some reassurance as i have been doing a few weird things lately and my memory is not as good etc.