Hi. Elevation of CPK is a common finding in myositis, but it can also signify injury or stress to the heart and brain. Polymyositis is an inflammatory myopathy characterized by progressive muscle inflammation and weakness. The diagnosis of myositis should not be based from CPK levels alone; a muscle biopsy, nerve conduction techniques, imaging procedures and blood tests may be performed to confirm the diagnosis. If you think you have myositis, I suggest that you make an appointment with your doctor for further evaluation and management. Hope this helps.
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