The pituitary gland is often referred to as the master gland, coordinating hormonal signals from the hypothalamus and peripheral circulation to maintain homeostasis in the body. Patients with pituitary dysfunction are faced with challenges unique to each stage of their life cycle. For example, the goals of management for a hypopituitary adolescent transitioning to adulthood would be to optimize growth and sexual development. In early adulthood, approaches that optimize of fertility in men and women can be a priority, and the management approach will be very different from that of older adults requiring sex hormone replacement. This case-based guide will provide practical clinical guidance on approaches to the management of pituitary disorders organized by time of life, from childhood and fertile years through to older age. Sensibly divided into sections, various pituitary disorders and conditions are described and relevant treatment strategies are outlined. Sections included discussions of the unique considerations for the pituitary gland in childhood and adolescents, patients desiring fertility and pregnant patients, health optimization and non-tumoral diagnoses in adults, and management of disorders of the hypothalamic-pituitary axis in the elderly. Each chapter presents a clinical case vignette as an introduction to the concepts and a framework for the discussion of the diagnosis, management and unique consideration of each pituitary pathology. Practical and user-friendly, is an excellent resource for practicing clinical endocrinologists (pediatric, transitional care, adult) and reproductive endocrinologists as well as specialty residents and trainees.