Abstract
PURPOSE OF REVIEW: Physicians treating patients with Parkinson disease must evaluate not only motor symptoms but also acquire expertise in assessing the complex behavioral features that often accompany the disease, such as dementia, apathy, anxiety, and depression. RECENT FINDINGS: There is a risk of diagnostic confusion and error because many of the behavioral and motor symptoms accentuate, overlap, or mimic each other. SUMMARY: Awareness of potential diagnostic pitfalls and "pseudo-syndromes" should lead to more accurate clinical assessment and better care for our patients.