Like all other animals in the animal kingdom, humans also possess an immune system. The main functions of the immune system are to defend the body from germs and other foreign invaders.
The immune system is composed of special cells and organs that deal with invaders and allergens. The cells create antibodies to fight off the infection or foreign intruders.
To defend the body the immunity must recognise what is self or what belongs to the body and what is non-self or foreign to the body.
Autoimmune disorders occur when the body fails to tell the difference between self and non-self. When this happens, the body makes antibodies that are directed towards the body’s own tissues. These are called auto-antibodies. The autoantibodies attack the normal cells by mistake.
Hence the autoantibodies in your case are attacking your cells and resulting in these nodules and bumps over your body and also getting secondarily infected .
Prolonged intake of antibiotic and other immunosuppressives are the key to the management of your condition.
Genetics may play a role in causation of autoimmune disorders but several environmental factors may also be important in causing autoimmune disorders. These include exposure to solvents, chemicals, viral and bacterial infections, sunlight, , bacteria and others.
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