is a rare inherited disorder causing early brain and vision degeneration.

is a rare genetic brain disorder causing progressive microcephaly and developmental problems.

is a rare inherited disorder affecting the brain, eyes, and development.

is a rare neurological disorder causing infant seizures and later involuntary movements.

is a rare, benign growth causing nodules on infants' fingers or toes.

is a rare genetic movement disorder with dystonia and parkinsonism in infancy.

is a group of early-life seizure disorders affecting infants' brain development.

is a rare genetic brain disorder causing seizures, movement problems, and delays.

is a rare inherited disorder causing toxic glycine buildup in the brain.

is a benign blood vessel growth in an uncommon body area.

is a rare infant heart muscle disease causing dangerous abnormal rhythms.

is a condition where a baby's heart muscle becomes abnormally thick.

is a rare genetic heart disease causing thickened heart muscle in infancy.

is a rare inherited disorder causing weak bones, breathing and feeding problems.

is a rare disorder causing hypotonia, abnormal eye movements, and developmental delays.

is a rare early-onset bowel disease that can also affect the brain.

is a rare inherited disorder that damages nerves and affects development.

is a rare genetic disorder causing severe liver disease in infancy.

is a rare form of mercury poisoning affecting infants and young children.

is a rare inherited disorder affecting the brain, hormones, and pancreas.

is a rare disorder causing benign myofibromas in infants, sometimes multiple.

is a rare inherited kidney disorder causing early childhood kidney failure.

is a rare inherited disorder causing cystine buildup and kidney damage.

is a rare genetic childhood disorder causing progressive movement and thinking decline.