what happens when you have too much collagen in your body ?

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What happens when you have too much collagen in your body?
Scleroderma is an autoimmune disease in which the body produces too much collagen, a fibrous protein that is a major component of the body's connective tissues, including the skin, muscles, bones, tendons, and cartilage. It is also found in the gastrointestinal tract, blood vessels, and other organs.