Fibromyalgia syndrome (FMS) is a chronic pain condition primarily affecting women aged 25 to 55, characterized by widespread pain, fatigue, and diverse somatic symptoms. Diagnosis is based on specific criteria involving pain index scores and symptom severity, with potential genetic and environmental risk factors contributing to its onset. Abnormal levels of cytokines, neurotransmitters, and hormonal imbalances may also be involved in the disease's pathogenesis, leading to overlapping conditions and heightened pain sensitivity.