Book excerpt: In this issue of Neurologic Clinics, guest editor Randolph W. Evans brings his considerable expertise to the topic of Secondary Headaches. - Provides in-depth secondary headaches, offering actionable insights for clinical practice. - Presents the latest information on this timely, focused topic under the leadership of experienced editors in the field. Authors synthesize and distill the latest research and practice guidelines to create clinically significant, topic-based reviews.