| A rare idiopathic inflammatory myopathy with a heterogeneous phenotype that has characteristics of myositis with at least one clinical and/or autoantibody overlap feature. Possible clinical overlap features include polyarthritis, Raynaud's phenomenon, sclerodactyly, scleroderma (proximal to metacarpophalangeal joints), lung interstitial pneumonia, and/or clinical signs of systemic lupus erythematosus (SLE). The disorder is more common in adult women and is frequently associated with other connective tissue disorders. |
