[Inflammatory myalgic syndrome and muscular mitochondrial abnormalities: 4 cases].

Histologic and biochemical anomalies of muscle mitochondria were identified in four patients with predominantly rhizomelic myalgia clinically suggestive of an inflammatory disease but inconsistent biologic evidence of inflammation. This clinical pattern was initially suggestive of atypical polymyalgia rheumatica and could not be ascribed to any other disease. To explain this combination of anomalies, several hypotheses can be put forward, including coincidence, aging, and nonspecific mitochondrial anomalies resulting from immunologic or inflammatory disease. The speculation that these patients have an autonomous syndrome cannot be outruled but should be considered with caution. A therapeutic trial with coenzyme Q is under way.