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.
Mayo Clinic is also highly recommended too. You could also talk to people at The Myositis Association www.myositis.org for a good place closer to you for treatment.
I know several people on this site may live on the East Coast and may have some good recommendations too.
Best of luck to you.
shawna