Great book. Based on my experience working with PD patients who have DBS therapy, the authors provide just the right amount of content to satisfy the lay reader. In terms of the clinical aspects of the disease, the book is spot on. From medication side effects to alternative forms of speech therapy, the book is highly comprehensive.
On the other hand, the chapter that presents surgical options for PD needs revising, specifically, Deep Brain Stimulation. There is simply more to what the author is presenting, and it could potentially cause surgical candidates to abandon a revolutionary therapy. For example, when the author compares STN to GPi DBS. In my experience, GPI may not be easy to program and requires higher amplitudes to have an effect. Also, the authors mention that STN DBS will have fewer battery changes, which may not be the case. That will depend on the programming parameters, which are extremely variable from patient to patient. Additionally, every neurologist titrates medications differently. Depending on how and what drugs the patient is taking will influence how high the DBS setting will need to be. There are simply too many details missing to properly compare these targets and their potency. Hence, DBS has been around for decades and is constantly evolving with an astounding amount of literature that appears to cause conflicting conclusions. On the other hand, the authors did an amazing job in presenting the procedural aspects of actually getting the DBS therapy.
Interestingly enough, there was a chapter on the microbiome. The microbiome is an evolving area of research in which the bacteria in your intestines have a significant influence on the nervous and immune systems. Additionally, it's no coincidence that before motor symptoms set in for PD, constipation is typically the first sign. Therapy centering on the microbiome is currently under research. Hence, diet can have a profound effect on the disease.