Since last 6 months,I am having problems related to memory.I forget things very fast and unable to recollect people's name.I recognise the person but take much time to recall his name.I rapidly forget what was discussed in the meeting few minutes back.I am unable to imagine any thing..I feel blank when someone asks me to think about something.I am becoming weak on calculations.I have consulted few general physicians but they don't give much attention to this problem and prescribed multi vitamins or gave it a name of stress.I need a solution to this problem.Which specialist should I refer to?