| polymyositis | <pathology> An inflammatory condition of muscle of unknown aetiology. Muscle pain and weakness are common symptoms of this condition. When associated with a skin rash the condition is referred to as dermatomyositis. (27 Sep 1997) |
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| dermatomyositis | <pathology> A disease of connective tissue characterised by swelling, dermatitis and inflammation of muscle tissue. Symptoms include fever, malaise, difficulty swallowing, general weakness, muscle weakness (pelvic and shoulder girdle muscles) and skin and mucosal lesions. (27 Sep 1997) |