There are 3 main types of myositis, polymyositis, dermatomyositis and inclusion body myositis. I have PM and the common symtpoms of both pm and dm are difficulty getting out of chairs, going up stairs, raising your hands over your head, and sometimes swallowing. It is true that lupus can cause muscle weakness but it is not characterized by weakness in the proximal muscles like pm or dm.
There are many other minor symptoms and each case, like lupus, is different. The two blood tests that are usually, but not always, indicate an active myositis disease are sed rate and cpk. The sed test indicates an inflammatory process but does not diagnose which one. Cpk is a measure of muscle breakdown and is is usually present in myositis patients.
If your doctor suspects myositis you should have these tests. Definitive diagnosis is usually done with a muscle biopsy. I actually have mixed connective tissue disease (lupus, scleroderma and polymyositis). Many who have myositis also have a connective tissue disease as well.
Mixed connective tissue disease (systemic lupus, scleroderma, polymyositis), Raynauds phenomena, Hypertension, Barrett's esophagus.
Meds: prednisone 5mg, 50mg imuran, Lotrel 40/5mg, maxide 37.5/25mg, folic acid, potassium, aciphex 20mg, multi vitamins.
Maintain your optimism and you can beat the odds.
"Although the world is full of suffering, it is also full of the overcoming of it." Helen Keller