{Reference Type}: Case Reports {Title}: Extended Follow-Up and Analysis of Non-secretory IgG-Type Multiple Myeloma in a Patient With Fibromyalgia: A Case Report. {Author}: Ohta R;Naito Y;Sano C; {Journal}: Cureus {Volume}: 16 {Issue}: 6 {Year}: 2024 Jun 暂无{DOI}: 10.7759/cureus.63321 {Abstract}: Fibromyalgia (FM) presents a diagnostic challenge due to its complex symptoms and lack of definitive tests. This study discusses a 54-year-old female initially diagnosed with FM, characterized by widespread pain, fatigue, and tender points. Despite treatment, she developed elevated C-reactive protein (CRP) and anemia after two years, leading to further investigations. These tests revealed non-secretory multiple myeloma, underscoring the importance of vigilant monitoring in FM patients. This case highlights the need for regular CRP measurements and thorough follow-up to detect underlying conditions. Early detection and appropriate intervention are crucial in managing FM and improving patient outcomes.