Igneous rocks are formed from the solidification of molten rock material. There are two basic types. Intrusive igneous rocks crystallize below Earth's surface, and the slow cooling that occurs there allows large crystals to form. Examples of intrusive igneous rocks are diorite, gabbro, granite, pegmatite, and peridotite.
Systemic sclerosis or systemic scleroderma is an autoimmune or connective tissue disease. It is characterized by thickening of the skin caused by accumulation of collagen, and by injuries to the smallest arteries.ystemic sclerosis or systemic scleroderma is an autoimmune or connective tissue disease. It is characterized by thickening of the skin caused by accumulation of collagen, and by injuries to the smallest arteries.
This form of scleroderma develops very slowly, causes few complications, and rarely spreads to other parts of the body. Another, more serious variant of the disease, is called Systemic scleroderma, or sclerosis, and can affect large areas of the skin as well as other organs such as the heart, lungs, and kidneys. There are actually two main types of systemic scleroderma, limited disease (CREST syndrome), and diffuse disease.Treatment.