Diseases

Ctd (Connective Tissue Disease)

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Mixed connective tissue disease is a term used by some doctors to describe a disorder characterized by features of systemic lupus erythematosus, systemic sclerosis, and polymyositis. Raynaud phenomenon, joint pains, various skin abnormalities, muscle weakness, and problems with internal organs can develop.

Diseases in which inflammation or weakness of collagen tends to occur are also referred to as collagen diseases. Collagen Vascular diseases can be (but are not necessarily) associated with collagen and blood vessel abnormalities and that are autoimmune in nature. See also vasculitis.
Connective tissue diseases can have strong or weak inheritance risks, and can also be caused by environmental factors.
A connective tissue disease is any disease that has the connective tissues of the body as a target of pathology. Connective tissue is any type of biological tissue with an extensive extracellular matrix that supports, binds together, and protects organs. These tissues form a framework, or matrix, for the body, and are composed of two major structural protein molecules: collagen and elastin. There are many different types of collagen protein in each of the body's tissues. Elastin has the capability of stretching and returning to its original length—like a spring or rubber band.