<unk>  is an inflammatory myopathy mediated by cytotoxic T cells with an as yet unknown autoantigen, while dermatomyositis is a humorally mediated angiopathy resulting in myositis and a typical dermatitis. The cause of<unk>  is unknown and may involve viruses and autoimmune factors. Cancer may trigger<unk>  and dermatomyositis, possibly through an immune reaction against cancer that also attacks a component of muscles. There is tentative evidence of an association with celiac disease.
Polymyositis
Scleroderma
Dermatopolymyositis
Dermatomyositis
Inclusion body myositis
Nemaline myopathy
Inflammatory myopathy
Metabolic myopathy