is a rare disorder causing dangerous widening and tearing of the aorta.

is a rare pregnancy complication caused by uneven sharing of the placenta.

is a rare condition caused by exposure to harmful toxins or poisons.

is a rare disorder caused by harmful toxic effects in the body.

is a rare complication of twin pregnancy caused by uneven blood flow.

is a rare disorder affecting multiple parts of the eye.

is a rare eye disorder affecting the front structures of the eye.

is a rare disorder affecting the tear-producing and tear-draining system.

is a rare disorder affecting structures around the eye, like eyelids.

is a rare disorder affecting the back part of the eye.

is a rare eye condition affecting pupil size, shape, or function.

is a rare disorder affecting the eyes and other visual structures.

is a serious condition that may sometimes require intestinal transplantation.

is a rare, serious heart condition that may require transplantation.

is a rare disorder that may be treated with stem cell transplant.

is a rare kidney condition that may eventually require transplantation.

is a rare disorder that may sometimes require a liver transplant.

may severely damage the lungs and sometimes requires transplantation.

is a serious condition that may sometimes be treated with transplantation.

is a serious condition linked to organ transplantation before or after surgery.

is a rare condition linked to monochorionic twin pregnancies.

is a rare condition linked to pregnancy, childbirth, or the postpartum period.

is a rare disorder causing moyamoya angiopathy and reduced brain blood flow.

is a rare disorder that mainly affects the conjunctiva of the eyes.