Serum Catestatin Levels and Their Association with Pain Severity in Fibromyalgia Syndrome: A Cross-Sectional Case–Control Study
Background: Catestatin (CST) is a neuropeptide involved in autonomic regulation, inflammation, and immune responses. This study aimed to compare serum CST levels between patients with fibromyalgia syndrome (FMS) and healthy controls and to examine their associations with pain severity, disease impact, and fibromyalgia-...