is a rare disorder that mainly affects the cornea, the eye’s clear front.

is a rare disorder causing dystonia and other neurologic or body-wide symptoms.

is a rare disorder that can cause outward-turning eyelids (ectropion).

is a rare condition causing inward-turning eyelids and eye irritation.

is a rare inherited condition causing female infertility from low hormone signaling.

is a rare genetic disorder often causing Hirschsprung disease and developmental differences.

is a rare condition causing delayed puberty and reduced sex hormone production.

is a very rare condition causing excessive hair growth on the body.

is a rare disorder causing clouding of the eye's lens.

is a rare disorder affecting multiple body systems and delayed puberty.

is a rare condition causing blocked sperm flow and male infertility.

is a rare eye disorder involving abnormal optic nerve development.

is a rare genetic condition causing unusually dark-colored whites of the eyes.

is a rare condition that can cause drooping eyelids and other symptoms.

is a rare condition marked by crossed eyes and other varying symptoms.

is a rare condition that remains undiagnosed despite thorough medical testing.

causes unusually abnormal blood fat levels that can raise health risks.

is a rare movement disorder causing involuntary muscle contractions and abnormal postures.

is a rare endocrine disease affecting hormone production and body functions.

is a rare hormone disorder that affects growth, development, and body function.

is a group of uncommon seizure disorders that often need specialist care.

is a rare colon tumor that starts in the bowel lining.

is a rare pancreatic tumor that starts in the lining cells.

is a rare rectal lining tumor that can sometimes become cancerous.