Collagen vascular disease occurs when problems with the immune system affect collagen.
Collagen is a tough, fiber-like protein that makes up about a third of body protein. It is part of the structure of tendons, bones, and connective tissues.
In a class of diseases known as
Collagen vascular diseases include:
Dermatomyositis Polyarteritis nodosa Psoriatic arthritis Rheumatoid arthritis Scleroderma Systemic lupus erythematosus