Genetic Myopathies Initially Diagnosed and Treated as Inflammatory Myopathy

OBJECTIVES: Differentiating genetic myopathies from inflammatory myopathies can be challenging because of multiple overlapping clinical features. Examples are presented to highlight important clinical features that assist in the differentiation between the two. METHODS: Clinical features including age at onset, history, pattern of weakness, serum creatine kinase activity, electromyography findings, and muscle biopsies are reported in six …