Most people who develop dementia will never be diagnosed, and therefore lack access to treatment and care from specialists in the field. This new edition provides updated guidance on how behavioral symptom reflect the changes occurring in the brain, and how these can help generalist clinicians to accurately diagnose neurodegenerative diseases. This practical book is aimed at healthcare professionals working in neurology, psychiatry and neuropsychology wanting to enhance the skills and knowledge needed to successfully manage these diseases. Simple approaches to bedside mental status testing, differential diagnosis and treatment, and interpreting neuropsychological testing and neuroimaging findings are covered. Introductory chapters outline dementia epidemiology and dementia neuropathology whilst chapters new to this edition describe the improvements in diagnostic capabilities in recent years, including blood based and cerebrospinal biomarkers and emerging biologically based therapies. Chapters on sleep disorders, and chronic traumatic encephalopathy and traumatic brain injury have also been expanded.