The<unk><unk>  and<unk> <unk> es are a group of disorders that affect connective tissue, the tissue that supports the body's joints and organs. These disorders are caused by defects in<unk><unk>  or<unk><unk>  collagen. Collagens are complex molecules that provide structure, strength, and elasticity to connective tissue.<unk><unk>  and<unk><unk>  collagen disorders are grouped together because both<unk>  of collagen are components of the cartilage found in joints and the spinal column, the inner ear, and the jelly-like substance that fills the eyeball (the vitreous). The<unk><unk>  and<unk> <unk> es result in similar clinical features.
Collagenopathy, types II and XI
Collagen disease
Acrokeratoelastoidosis of Costa
Fibromuscular dysplasia
Actinic elastosis
Mixed connective tissue disease
Adult polyglucosan body disease
Fibrin ring granuloma