en بهداشت Health نامه به سردبیر Letter to Editor <div style="text-align: justify;"><span style="font-size:14px;"><span style="font-family:Tahoma;"><span style="line-height:2;"><span style="unicode-bidi:embed">Fibromyalgia (FM), a complex chronic pain syndrome affecting 5% of the global population, has a multifactorial etiology involving genetic, neuroendocrine, and environmental factors. The COVID-19 pandemic has brought new insights into FM, with emerging evidence showing that COVID-19 survivors may develop FM-like symptoms. It raises the possibility of an overlap with post-viral syndromes. Studies indicate that nearly one-third of post-COVID patients meet FM criteria, with factors like obesity and male gender influencing susceptibility. Additionally, the heightened anxiety associated with COVID-19 exacerbates FM symptoms, suggesting the role of psychological stress. Recognizing FM in the context of long-term COVID-19 can enlighten treatment strategies, particularly with insights from rheumatology, which may enhance disease outcomes. This research intersection underscores an urgent need for comprehensive studies to clarify the impact of viral infections on chronic pain syndromes, potentially refining the management and classification of FM.</span></span></span></span></div> Fibromyalgia (FM), COVID-19, Editorial  151 152 http://cpr.mazums.ac.ir/browse.php?a_code=A-10-222-1&slc_lang=en&sid=1 Raheleh Rafaiee rachel.rafaie@yahoo.com 10031947532846002345 10031947532846002345 No Department of Neuroscience, School of Advanced Technologies in Medicine, Mazandaran University of Medical Sciences, Sari, Iran. Hamed Ghazvini hghazvini1@gmail.com 10031947532846002346 10031947532846002346 No Psychiatry and Behavioral Sciences Research Center, Addiction Institute, Mazandaran University of Medical Sciences, Sari, Iran. Seyed Hamzeh Hosseini hosseinish20@gmail.com 10031947532846002347 10031947532846002347 Yes Department of Psychiatry, Psychosomatic Research Center, School of Medicine, Sari Imam Khomeini Hospital, Mazandaran University of Medical Sciences, Sari, Iran.