Due to the many different forms of inflammatory myositis and similarities to other muscular and nerve diseases, it may take a few visits to the doctor before the condition can be diagnosed. After a careful physical examination, the doctor will order other tests to confirm the diagnosis. Such tests may include:
Routine tests like a full blood count, Erythrocyte Sedimentation Rate (ESR) and C-reactive protein (CRP).
Blood tests for muscle enzymes and auto-antibodies. Muscle enzyme levels (usually raised initially) are useful for monitoring progress and response to treatment.
Electromyogram (EMG)This is a test that measures the electrical activity of muscles. In patients with inflammatory myositis the EMG would be abnormal.
Muscle BiopsyThe doctor takes a sample of the affected muscle to be examined under the microscope. The procedure is done under local anaesthesia.
X-ray of the chestTo investigate for lung cancer and lung involvement associated with inflammatory myositis.
Magnetic Resonance Imaging (MRI)This painless scan can identify abnormal muscles and can be used to locate the best site for a biopsy and to monitor the progress of the disorder.
A chest and abdominal CT scanThis test is useful to investigate for hidden cancers.
Gastroscopy and colonoscopyThese tests are useful to investigate for underlying cancers in the gastrointestinal tract.
Subscribe to our mailing list to get the updates to your email inbox...