Causes ofscleroderma

Normally, the body'simmune system fights off any germs that infect the body. It responds like thisto anything in the body it doesn't recognise, and settles down when the infection has been cleared.

It's thought scleroderma occurs because part of the immune system has become overactive and out of control. Thisleads tocells in the connective tissue producing too much collagen,causing scarring and thickening (fibrosis) of the tissue.

It's not clear why this happens. Certain genes are thought to be involved, and having a close family member with the conditionmay increase your risk.

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Medically Reviewed by a doctor on 21 Dec 2018