Chronic inflammatory diseases is a research field and academic concept within biomedical science focused on understanding conditions characterized by prolonged, dysregulated inflammatory responses that persist over extended periods, often leading to progressive tissue damage and organ dysfunction. This field investigates the complex cellular and molecular mechanisms underlying the initiation, maintenance, and resolution failure of chronic inflammation, its diverse clinical manifestations across various organ systems, and its significance in developing diagnostic markers and therapeutic interventions for debilitating conditions such as autoimmune disorders, metabolic diseases, and neurodegenerative disorders.