noun
fibrositis
Medical term for inflammation of fibrous connective tissue, often causing muscle pain and stiffness.
結合組織炎は、筋肉の痛みやこわばりを引き起こすことがあります。
Fibrositis can cause muscle pain and stiffness.
Fibromyalgia; a related chronic pain condition often confused with fibrositis, but now considered a distinct diagnosis.
Compound of 結合組織 (connective tissue) + 炎 (inflammation). The term is a direct medical calque.