Polymyositis & Dermatomyositis Support Group
Polymyositis (PM) is a type of chronic inflammation of the muscles (inflammatory myopathy) related to dermatomyositis and inclusion body myositis. The inflammation is predominantly of the endomysium in polymyositis, whereas dermatomyositis is characterized by primarily perimysial inflammation.
DM/PM is severe inflammation. In PM the inflammation is in the muscles. In DM, the inflammation is around the muscles. DM overlaps with Lupus and/or Scleroderma. Think of the DM as a component of Lupus or Scleroderma. DM is also considered a connective tissue disease. A good rheumatologist that is familiar with Lupus, Scleroderma, RA, etc.. should be able to handle DM/PM well. The DM/PM component might be rare but the systemic part of disease is familiar to a good rheumy. You can read about medications used for DM/PM on the TMA site. Finding the correct dosage amounts makes a difference in feeling well.
Your doctor is sending you for the EMG. There are some who begin with connective tissue disease where test results are inconclusive. DM/PM might not show up right away in test results even if there is some myopathy (muscle weakness). I have talked with many people over the years. Some people need to wait a while for a diagnosis because all the different components do not come together right away. Like Autumn mentioned, do not get down. The doctor will find where you are in the process. There is also the consideration of Myasthenia Gravis or one of the other muscle weakness diseases that are much like DM/PM in symptoms.
The whining that many of us do is often about kidney/liver, heart/lung or some type of organ symptoms. We are all different in how we feel. Blood work helps to bring some answers. Do ask the doctor about what your blood work is revealing at this point.
Try to relax. I hope this helps. You are at the beginning of your testing. I will put in some prayers for an accurate diagnosis and correct medications. I hope you feel better soon. Best Wishes.
One thing that impacts your well being is antibodies. I recommend you get a myositis antibodies test too. It is simple blood work. An EMG can be a piece of the puzzle but not everyone with DM has muscle involvement so it might not show anything. But even then, that is good to know.
Try to be patient. I know it is hard. It took me 4 years to get diagnosed and then I ended up at Johns Hopkins to better tune my diagnosis.
I actually did got diagnosed with DM by 100%. My antibody is Anti-Mi-2. I also have done the full set of blood works, whole body CT, EMG, ECO, EKG etc. when i was first checked.
My probelm is with this flare, as I wrote before. Because it is not shown in the blood tests I feel like i have a big responsibility on my shulders, since there is no a real test for flares... I understood that the results of the EMG I will do next, will not be a real parameter and i will increase the prednisone's dose anyway...