This study aims to explore the diverse etiological factors associated with fibromyalgia, including trauma, stress, infections, and head injuries, and investigate their potential correlation with fibromyalgia severeness manifestation, aiming to discern fibromyalgia subgroups. The study is a retrospective analysis, conducted with data of 182 fibromyalgia patients. Each patient's medical history was analyzed to identify a primary etiological event preceding fibromyalgia. Following this, correlations were examined between each etiology group and different measurements, such as impact of fibromyalgia on overall function, widespread of pain, depression, anxiety, and cognitive impairments. Cluster analysis was conducted in order to distinguish between groups of symptoms and functioning. Contrary to the initial hypothesis, no direct association between a specific trigger and symptom manifestation was identified. However, cluster analyses revealed two distinct profiles based on symptom severity. Emotional trauma emerged as a potential contributor to heightened symptom severity, impacting overall function and cognitive abilities. Emotional trauma and stress are crucial factors exacerbating fibromyalgia (FM) symptoms, highlighting the importance of managing these elements in FM patients. This study underscores the complexity of FM, necessitating a nuanced understanding of its etiology and symptomatology. We recommend a multidisciplinary treatment approach that includes assessing and addressing chronic stress and trauma and incorporating stress management interventions to improve patient outcomes.