Mind fog or brain fog is an ongoing battle as a symptom prior to transplant. It is quite often linked to a build up of ammonia in your system. Many of us here were put on lactulose (almost like a laxative) and rifaxamin or xifaxamin to help clear our bodies of this build up. I myself fell into an HE coma that I didn't fully come out of for several weeks. Subsequent minor HE episodes followed but only when I reduced my lactulose intake. These episodes can be scary and I actually had my driving license suspended until 9 months post transplant. Ask your hepatologist or transplant coordinator about this. It really shouldn't go unchecked. It can be very disorientating to say the least. I forgot what year it was, the month, day and time. I forgot all my banking codes even my address and phone number. I carried all pertinent emergency names and numbers with me at all times. I even forgot where I was in a grocery store once and had to sit down and take a few minutes to remember. I am not an older person.
Please feel free to ask me anything and I will relate my own personal experience.