<unk>  is a connective tissue disease that involves changes in the skin, blood vessels, muscles, and internal organs. It is a type of autoimmune disorder, a condition that occurs when the immune system mistakenly attacks and destroys healthy body tissue.
Scleroderma
Anetoderma
Xeroderma
Juvenile dermatomyositis
Scleromyositis
Dermatomyositis
Vitiligo
Fuchs' dystrophy