Has anyone ever come across someone with a brain injury where the effected person does not realise what's wrong with them? Have noticed a lot of people on here who have BI's or care for someone with one, all seem to realise what is wrong with them. kmowing the issue seems to be the first step in finding ways around how to live with a BI. My mum doesn't know what's wrong with her as she has no short term memory. years later she still doesn't realise.