Hi there, Welcome to Justanswer! I will be pleased to help you. Please do not hesitate to ask, when more informations are needed. No psychiatrist specialises in Factitous Illness by Proxy alone; this diesease is far too rare to do that. But Dr. Christopher M. Bass in Radcliffe Hospital (Oxford) ist not only a well known specialist but did some interesting research concerning this illness. If he would not see your mother, you might try it here:http://www.expertsearch.co.uk/netscape/search.html. This is the u.k.- search- platform I recommend. I hope you will convince your mother to get help and succeed in finding a very good (you never know who ist the very best...) psychiatrist. I wish you all the best!