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.
An Illness That Does Not Go Away. Scleroderma is chronic. This means that it lasts for your lifetime. However, like diabetes, high blood pressure, heart disease, and psoriasis, scleroderma can be treated and the symptoms managed. The cause of scleroderma is unknown and there is currently no cure, but there are treatments that can effectively prevent or limit the damage caused by this chronic disease.