I'm currently signed off work sick with mental health issues. I have started taking medication and really want to get back to work as soon as I feel better and able to get myself ready each morning and survive a day in the office (which I definitely don't feel able to do at the moment). My question is: when I go back my colleagues are all likely to ask me why I've been away and I really don't know what to say. I don't want to say depression/anxiety etc. If I say 'personal issues' that sounds really stand-offish. Any advice please?