Connective Tissue Disease
Connective tissue is the material between the cells of the body that gives tissues form and strength. The term “connective tissue disease” or CTD refers to a family of more than 200 disorders that result from alterations in genes; they may change the structure, development, and functioning of skin, bones, joints, heart, blood vessels, lungs, eyes, and ears. CTDs include Marfan syndrome and Raynaud’s phenomenon. Diagnosis rests on family history, medical history, and physical examination, and medical geneticists and laboratory tests are available to confirm the diagnosis.