Looking for that book got me going through my pile and I came across this
"The Causes of Epilepsy: Common and Uncommon Causes in Adults and Children" 2011 by Cambridge University Press
edited by
Simon D. Shorvon MA MD FRCP
Professor in Clinical Neurology, UCL Institute of Neurology, University College London;
Consultant Neurologist, National Hospital for Neurology and Neurosurgery, London, UK
Frederick Andermann OC MD FRCPC
Professor, Departments of Neurology and Neurosurgery and Pediatrics, McGill University;
Director, Epilepsy Service, Montreal Neurological Institute and Hospital, Montreal, Quebec, Canada
Renzo Guerrini MD
Professor of Child Neurology and Psychiatry, University of Florence;
Director, Pediatric Neurology Unit and Laboratories, Children’s Hospital A. Meyer, Florence, Italy
The interesting thing is there is no mention at all of psychogenic epilepsy!
So it looks as if believers in FND may be a specific school of thought or things have gone seriously downhill.