The third edition of this concise but comprehensive textbook follows on from the highly-regarded earlier editions in providing the trainee and general physician with a better understanding of the principles of neurology. Retaining an emphasis on the core clinical skills of history taking and careful neurological examination, the new edition has been thoroughly revised and updated to take into account new developments in investigation and treatment. Particular areas of enhanced coverage include headache, expanded beyond migraine to cover other presentations, and multiple sclerosis. Completely new chapters discuss the increasing role of neurogenetics in the understanding and treatment of neurological disease, the importance of pain and its management and neurological complications associated with respiratory intensive care. Following the sad death of Dr. David Marsden, Dr John Scadding has joined the editorial team retaining the 'Queen Square' connection of earlier editions.