Type II Most severe form. Frequently lethal at or shortly after birth. Numerous fractures and severe bone deformity. Small stature with underdeveloped lungs. Type III Bones fracture easily.
Fractures often present at birth.
X-rays may reveal healing of in utero fractures. Barrel-shaped rib cage. Sclera have a blue, purple, or gray tint. Brittle teeth and hearing loss possible. Type IV Between Type I and Type III in severity.