Investigations for adult dermatomyositis

Investigations for adult dermatomyositis are as for other idiopathic inflammatory myopathies; see Investigations for idiopathic inflammatory myopathies for details.

Investigations to screen for and exclude malignancy may be required, although a malignancy may be present before, concurrently or after the onset of dermatomyositis symptoms. The simplest screening tools include a chest X-ray, mammography, and faecal occult blood test.