My Dad has steadily got more and more forgetful over the past months, so that now he doesn't realise he is at home when he is at home, can't remember the shape of money and its value, can't remember he is married to mum or what she is doing in the house (she lives here), doesn't really know who I am, and gets angry about everything. He also imagines things, like that people are taking his money and that people have been in the house. This is not all the time; sometimes he seems fine, almost like normal. Mum and Dad went to the doctors about it and they did not do a diagnosis and mum refused a specialist referral for him because her brother has dementia and has been given these drugs that make him unable to do anything - he just sits like a vegetable and can't communicate at all, so Mum does not want this for Dad. But I don't know if this is Alzheimer's or not, or what to do. Mum doesn't like to talk about it and I once brought up that perhaps they should go back to the Doctor's but Mum got angry and refused. It's making me feel low because he is getting worse. I can't talk to Mum about this because she is already having to deal with Dad and won't want to have me to worry about too. I'm 16 years old and have loads of exams coming up too, but all I can think about is this at the moment. Advice would be much appreciated.