A useful aim for all psychiatrists is to write at least one competent, not necessarily first-rate, article or chapter on a subject on which they have become an expert. ‘I am never going to be an expert’, we hear some of you say, but this is simply not true. Everyone can become an expert in one area, even it is very tiny indeed. So, for example, if you come across someone in your practice who has the feeling of ants crawling over their skin, commonly called formication (please get the spelling right), and this is severe and troubling, you might want to write a review of ‘formication in psychiatry’. You will find about 50 published references on the subject but not very many from psychiatry.