I can’t work on maths problems: by the time I key a calculation into my calculator I’ve forgotten what I was actually calculating.

When I open my phone to write an email, by the time I have the ‘new email’ screen open I’ve forgotten what I wanted to write and to whom.

When I go off looking for something in another room, I forget what I was looking for by the time I’ve entered it. I constantly mutter ‘What was I doing? What was I doing?’

This is so debilitating – I can’t live like this. What can I do?