Abstract
Chronic inflammatory demyelinating polyradiculoneuropathy (CIDP) is an immune-mediated peripheral neuropathy characterized by progressive muscle weakness, sensory impairment, and diminished or absent deep tendon reflexes. This review summarizes current diagnostic criteria, clinical variants, common diagnostic pitfalls, and important differential diagnoses of CIDP. It discusses the roles of nerve conduction studies, cerebrospinal fluid analysis, magnetic resonance imaging, nerve ultrasound, and nerve biopsy in supporting the diagnosis. The article also reviews current treatment strategies, including intravenous immunoglobulin, subcutaneous immunoglobulin, corticosteroids, plasma exchange, and therapeutic approaches for refractory disease, emphasizing individualized treatment and objective monitoring of treatment response.