Symptoms
You may have some or all of the following symptoms.

You will have memory loss, particularly of recent events. this may not be severe at first but is likely to become progressively worse. later, your long-term memory may be affected.
You may have problems finding the right words for what you want to say.
It's possible that you will have trouble thinking clearly and doing practical tasks that you used to do easily.
You may feel puzzled and disorientated in new places. As dementia progresses, you may have difficulty finding your way around in familiar places, such as your own home.
The feeling of disorientation may increase so you don't know what month or year it is, or the time of day. this could cause you to get up in the middle of the night wanting to go out.
Family and friends may notice changes in your personality and behaviour. you may become withdrawn, prone to fits of temper, or anxious and depressed.
As your dementia worsens, you may no longer be able to look after yourself. It's possible that eventually

if someone drinks too much they will forget what they did .if someone drinks too much,regularly their brain cells will start dying thus making the person forgetful while sober.

paranoia,anxiety, withdrawal, illusions of grandeur,depression, particularly low self-esteem.

Ever watch Dr. Drew, and "Celebrity Rehab" or whatever he calls it? He claims a recovery rate of about 10%. And that's with hi-end drunks. The only success there is his bank account. Medicine has no cure rate for booze/dope. if you want to know seriously, go to AA Open meetings, and just listen to the stories. The only doctors you'll meet are in the worst shape of all. They think they can cure alcoholism with medication. Talk about a train wreck.