Small Fiber Neuropathy: Principles and Practice: Comprehensive Insights into Pathophysiology, Diagnosis, and Treatment

Small Fiber Neuropathy: Principles and Practice is a definitive, in-depth textbook dedicated to the comprehensive understanding of disorders affecting small-diameter peripheral nerve fibers. Designed for neurologists, internists, pain specialists, researchers, and advanced trainees, this authoritative volume bridges foundational science with clinical application, offering a complete and contemporary reference on one of the most challenging and often underdiagnosed neuropathic conditions. Small fiber neuropathy (SFN) is increasingly recognized as a major contributor to chronic pain, sensory disturbances, and autonomic dysfunction across a wide spectrum of systemic diseases. Yet, its diagnosis and management remain complex due to subtle clinical findings, normal standard electrophysiological studies, and heterogeneous etiologies. The book begins with a thorough exploration of peripheral nerve anatomy and physiology, emphasizing the unique structural and functional characteristics of A-delta and C fibers. Detailed discussions of nociception, thermoreception, and autonomic regulation establish a solid foundation for understanding symptom generation and disease mechanisms. Subsequent sections delve deeply into the molecular and cellular pathophysiology of SFN, including ion channel dysfunction, neuroinflammation, immune-mediated injury, mitochondrial impairment, and mechanisms of axonal degeneration and regeneration. A major strength of this volume lies in its exhaustive coverage of etiologies. Metabolic, autoimmune, genetic, infectious, toxic, nutritional, and idiopathic causes are examined in depth, with attention to overlapping syndromes and multisystem involvement. Clinical presentation is addressed comprehensively, capturing the full spectrum of sensory and autonomic manifestations. The textbook provides nuanced descriptions of pain phenotypes, sensory abnormalities, and non–length-dependent patterns, alongside detailed chapters on autonomic dysfunction affecting cardiovascular, gastrointestinal, sudomotor, genitourinary, and thermoregulatory systems. Diagnostic evaluation is covered with exceptional rigor. Readers are guided through structured clinical assessment, laboratory investigation, and specialized testing, including quantitative sensory testing, skin biopsy with intraepidermal nerve fiber density analysis, autonomic function testing, and emerging diagnostic modalities such as corneal confocal microscopy and advanced imaging. Practical guidance is provided on test selection, interpretation, limitations, and integration into clinical decision-making. Management and treatment strategies are presented using a multidisciplinary, patient-centered approach. Symptom-based therapies for neuropathic pain and autonomic dysfunction are discussed alongside etiology-specific interventions and disease-modifying strategies where applicable. The text critically appraises pharmacologic, non-pharmacologic, and interventional options, while emphasizing safety, long-term monitoring, and quality-of-life considerations. Contributions from pain medicine, rehabilitation, and behavioral health perspectives reinforce the importance of holistic care. The textbook concludes with forward-looking chapters on prognosis, longitudinal management, and emerging research directions. Ongoing clinical trials, novel biomarkers, immunotherapies, and regenerative strategies are explored, offering readers insight into the future of SFN diagnosis and treatment. Carefully curated clinical algorithms, illustrative case studies, summary tables, and extensive references enhance usability as both a learning tool and a day-to-day clinical reference.