Since its first edition in 1994, Neurology in Practice has fulfilled its objective to enhance the practice of neurology, and has been proven useful to students, physicians and allied health professionals. In this Fourth Edition, the authors continue to emphasize that a sound clinical approach is the key to the diagnosis and management of neurological disorders. Thus, relevant neuroanatomical principles and simulated neurological manifestations are incorporated in the first chapter. All chapters have been updated with knowledge gained from major advances in neuroscience. Two new chapters have also been added: "Neurodiagnostic Tests" and "Neurological Manifestations of Systemic Disorders and Neurotoxicology".