Myositis (my-o-SY-tis) is a rare type of autoimmune disease that inflames and weakens muscle fibers. Autoimmune diseases occur when the body's own immune system attacks itself. In the case of myositis, the immune system attacks healthy muscle tissue, which results in inflammation, swelling, pain, and eventual weakness.
Viruses or bacteria may invade muscle tissue directly, or release substances that damage muscle fibers. Common cold and flu viruses, as well as HIV, are just a few of the viruses that can cause myositis.
Polymyositis is a disease that causes muscles to become irritated and inflamed. The muscles eventually start to break down and become weak. The condition can affect muscles all over the body. This can make even simple movements difficult.
Autoimmune myositis causes inflammation and weakness in the muscles (polymyositis) or in the skin and muscles (dermatomyositis). Muscle damage may cause muscle pain and muscle weakness may cause difficulty lifting the arms above the shoulders, climbing stairs, or arising from a sitting position.
Myasthenia gravis. Myopathy. Myositis, including polymyositis and dermatomyositis.
Sedimentation Rate (also called erythrocyte sedimentation rate [ESR] or sed rate) measures swelling and inflammation of the muscles. Doctors use the sed rate to watch the progress of the muscle inflammation.
CT scan – where a series of X-rays are taken to create a detailed image of the inside of your body, which will reveal any muscle damage.
The most common is Duchenne muscular dystrophy (DMD). The next most common is Becker muscular dystrophy (BMD). Symptoms are almost the same as Duchenne, but less severe.
Among metabolic myopathies that can mimic myositis are disorders of carbohydrate metabolism such as McArdle's disease, 6-phosphofructokinase deficiency, and Pompe's disease (adult acid maltase deficiency); disorders of lipid metabolism such as carnitine deficiency and carnitine palmitoyltransferase 2 (CPT2) deficiency; ...
Many people described the pain of lupus as similar to having the flu. This means having chills and bone-weary aches throughout your entire body. The pain can be numbing and leave you feeling drained of all energy. “I explain it to others as feeling like the flu: achy joints, muscles, bones.”
Myositis (my-o-SY-tis) is a rare type of autoimmune disease that inflames and weakens muscle fibers. Autoimmune diseases occur when the body's own immune system attacks itself. In the case of myositis, the immune system attacks healthy muscle tissue, which results in inflammation, swelling, pain, and eventual weakness.
Pyomyositis (sometimes called tropical pyomyositis) is a rare and treatable bacterial infection that affects skeletal muscles (the muscles you use to move). Pyomyositis usually results in an abscess (a swollen area that contains pus) that forms in your muscle.
Nevertheless, myositis is a serious illness that, in most cases, needs to be treated aggressively. With inadequate or no treatment, myositis can cause significant disability and even death. There is no cure for any of the forms of myositis.
Polymyositis most commonly affects adults in their 30s, 40s or 50s. Women are affected more often than men. Signs and symptoms usually develop gradually, over weeks or months.
The main muscles to be affected are around the shoulders, hips and thighs. Having myositis can also lead to other parts of the body being affected, such as the skin, lungs or heart. Sometimes myositis can affect the muscles that carry out tasks such as breathing and swallowing.
Autoimmune disorders that specifically affect the muscles, joints, and nerves include rheumatoid arthritis (RA) and multiple sclerosis (MS). Polymyalgia rheumatica, which also involves the joints, is thought to be an autoimmune condition, according to the Arthritis Foundation.
Furthermore, MRI can also detect subclinical muscle inflammation such as in amyopathic DM (34), in which up to 100% of patients have muscle inflammation on WB MRI, or in amyopathic ASyS patients where muscular inflammation is frequently observed (28).
Symptoms of muscle disease may include muscular weakness, rigidity, loss of muscular control, numbness, tingling, twitching, spasms, muscle pain and certain types of limb pain.
Some common autoimmune diseases, including Type 1 diabetes mellitus, are relatively easy to diagnose, while others, such as vasculitis, Addison's disease, lupus, and other rheumatic diseases, are more difficult. Additionally, many of the 100-plus autoimmune diseases are uncommon or rare.