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Dermatomyositis (DM) is a long-term inflammatory disorder which affects the skin and the muscles. [1] Its symptoms are generally a skin rash and worsening muscle weakness over time. [1] These may occur suddenly or develop over months. [1] Other symptoms may include weight loss, fever, lung inflammation, or light sensitivity. [1]
Common symptoms include photosensitivity and malar rashes, similar to those seen with SLE. [17] Discoid lesions are also occasionally seen. [10] Some patients with MCTD may have scleroderma-like symptoms such as squared telangiectasia on the hands and face, periungual telangiectasia, sclerodactyly, and calcinosis cutis. [18] [10]
The three main types of idiopathic myositis (known as inflammatory myopathies) that typically test positive for autoantibodies are dermatomyositis, polymyositis, and inclusion body myositis. [4] Other autoimmune diseases, such as systemic lupus erythematosus, can also cause myositis-like symptoms. [4]
overlapping symptoms (such as muscle weakness, pain, elevated CK); that delaying treatment for an inflammatory myopathy, in order to exclude potential non-inflammatory myopathies, may cause irreversible damage (although administering immunosuppressants and glucocorticosteroids to non-inflammatory myopathies may also cause damage);
Lupus erythematosus is a collection of autoimmune diseases in which the human immune system becomes hyperactive and attacks healthy tissues. [1] Symptoms of these diseases can affect many different body systems, including joints, skin, kidneys, blood cells, heart, and lungs. The most common and most severe form is systemic lupus erythematosus.
Chilblain lupus erythematosus (chilblain lupus erythematosus of Hutchinson) Childhood dermatomyositis; Childhood discoid lupus erythematosus; Childhood systemic lupus erythematosus; Complement deficiency syndromes; Dermatomyositis; Ehlers–Danlos syndrome; Eosinophilia–myalgia syndrome
Neonatal lupus is the occurrence of SLE symptoms in an infant born from a mother with SLE, most commonly presenting with a rash resembling discoid lupus erythematosus, and sometimes with systemic abnormalities such as heart block or enlargement of the liver and spleen. [53] Neonatal lupus is usually benign and self-limited. [53]
Undifferentiated connective tissue disease (UCTD) (also known as latent lupus or incomplete lupus [1]) is a disease in which the connective tissues are targeted by the immune system. It is a serological and clinical manifestation of an autoimmune disease .