Overall the volume is well written, clearly organized, and appropriately referenced. There is rich use of pictorial information, including images, figures, and graphs, all of which substantially enhance the presentation of the material. One exception is the chapter by Berrios and Markova, "Psychiatric Disorders Mimicking Dementia," which is rather theoretical and confusing and seems to be more a nosological treatise than the anticipated practical clinical narrative. The chapters "Epidemiology of Pre-Senile Dementia," by Harvey, and "Dementia in Young Adults," by Panegyres, are particularly good. In fact, these two chapters are most relevant to the topic of early-onset dementia and the most interesting from this point of view as well. Of note, however, a statement made by Panegyres is from my point of view problematic if not incorrect. Panegyres asserts that the care of patients with dementia requires a multidisciplinary team, including the usual range of clinical professionals, which should be led by a neurologist. In fact, dementia specialists in psychiatry, geriatric medicine, and neurology are equally qualified to lead specialized dementia teams, as experience across the world has shown. To limit such leadership to neurologists would not only go against what has evolved in practice but would also place leadership in the hands of physicians with the least experience or tradition in leading multidisciplinary teams.