Marfan Syndrome.

Marfan syndrome is a rare hereditary disorder that causes connective tissue to be weaker than normal.

Connective tissue is the most abundant tissue in the body. It supports and protects various other tissues, is a vital component of all organs in the body, and provides strength and elasticity to blood vessels. Therefore, a disorder of connective tissue can cause a variety of abnormal conditions. For people with Marfan syndrome, weak connective tissue causes problems of the skin, muscles, ligaments, heart, eyes, blood vessels, and bones.