Dr Charles Clarke has been a consultant neurologist since 1979 and has broad experience and interests throughout neurology. He worked at St Bartholomew?s Hospital, the National Hospital for Neurology & Neurosurgery and in the front line of clinical practice at Whipps Cross Hospital, London and other district general hospitals. He has retired from the NHS and remains in practice. He was both the founding editor and an author of Neurology: A Queen Square Textbook, First and Second Edition.