The second chapter, "Neurobiological Basis of Behavioral Change in HIV Encephalopathy," is both well written and well referenced; however, many points discussed are also mentioned elsewhere in the volume; in this regard, the book would have benefited from tighter editorial work. "Differential Diagnosis of HIV Neurological Disease" follows and is an outstanding review of this topic; numerous clinical vignettes serve well to complement the academic discussion. The fourth chapter, "Neuropsychiatric Features of HIV Disease," is too long (94 pages), lacks a clear focus, and is over-referenced. The authors attempt to cover too much material, especially for a volume that is supposed to be a primer in this subject. Despite this chapter's meanderings, however, much of value can be found within.