[Idiopathic inflammatory myopathies : An interdisciplinary challenge].

Area of Science:

• Rheumatology
• Neurology
• Immunology

Context:

• Idiopathic inflammatory myopathies (IIM) are rare diseases affecting approximately 1 in 100,000 individuals.
• Characterized by proximal muscle weakness, myalgias, elevated creatine kinase, and muscle atrophy.
• IIM diagnosis and management require a multidisciplinary approach involving rheumatology, neurology, and other specialists.

Purpose:

• To outline the diagnostic and therapeutic challenges of Idiopathic Inflammatory Myopathies.
• To highlight the importance of autoantibody diagnostics in classifying IIM subtypes.
• To emphasize the association between specific IIM subgroups and the risk of malignancy.

Summary:

• Idiopathic inflammatory myopathies (IIM) present with diverse clinical features, including muscle weakness and elevated creatine kinase.
• Autoantibody profiling is crucial for differentiating IIM subtypes, each linked to distinct organ involvement and cancer risks.
• Accurate diagnosis and vigilant tumor screening are paramount due to the paraneoplastic potential of certain IIM forms.

Impact:

• Improved understanding of IIM heterogeneity and associated risks.
• Enhanced diagnostic strategies through autoantibody testing.
• Facilitation of interdisciplinary collaboration for comprehensive patient care.