Thrombocytopenia, Anasarca, Myelofibrosis, Renal dysfunction, and Organomegaly (TAFRO) Syndrome Initially Diagnosed as Fibromyalgia: A Case Report.

Thrombocytopenia, Anasarca, myeloFibrosis, Renal dysfunction, and Organomegaly (TAFRO) syndrome is a rare and complex medical condition characterized by a combination of symptoms, including thrombocytopenia, anasarca, myelofibrosis, renal dysfunction, and organomegaly. The diagnosis of TAFRO syndrome can be challenging because of its rarity, overlapping symptoms, heterogeneity, and lack of specific biomarkers. We describe the case of a 77-year-old female who presented with fatigue and generalized arthralgia as chief complaints. Initially, the condition demonstrated no inflammatory manifestations for three months, and the patient was diagnosed with fibromyalgia. However, her symptoms progressed, and she eventually developed anasarca, thrombocytopenia, hepatosplenomegaly, and renal dysfunction. After using biopsy to exclude various diseases, we established a diagnosis of TAFRO syndrome and administered prednisolone and tocilizumab. The diagnosis was based on the clinical progression of anasarca, thrombocytopenia, hepatosplenomegaly, and renal dysfunction. To diagnose TAFRO syndrome, the intensive exclusion of various critical diseases is mandatory. Additionally, considering the gradual and fluctuating clinical course of TAFRO syndrome, physicians in rural areas should meticulously assess systemic symptoms in older patients.