Myositis. Is simply the Inflammation of the muscle tissue.
It can be explained further as a connective tissue and autoimmune disease whereby ones own body immune system makes antibodies for protection against viruses, bacteria and other foreign bodies known as antigens.
In myositis, the immune system is an able to differentiate between antigens and its own cells and tissues resulting to the immune system making auto-antibodies that are directed against its own cells and tissues.
The auto-antibodies in the cells and tissues is what causes inflammation, pain and muscle damage. But over and above, the cause of myositis is still unknown and as yet there is no cure for the disease.
Therefore, patients with either of the myositis need constant physiotherapy to prevent muscle shrinkage and to keep them mobile. Myositis affects individuals differently.