is a rare ear, nose, and throat disorder affecting nearby structures.

is a rare tumor affecting the ear, nose, or throat.

is a rare ear, nose, and throat birth defect affecting head structures.

is a rare eyelid condition affecting the eyelids' structure or function.

is an uncommon pancreas condition that can affect digestion and blood sugar.

is a rare infection caused by parasites that can affect many organs.

is a rare disorder affecting parathyroid hormone and calcium-phosphate balance.

is a rare growth in a parathyroid gland that can raise calcium.

is a rare liver disease affecting the liver's functional tissue.

is a rare group of conditions causing movement, balance, and thinking problems.

is a rare inherited brain disorder causing movement problems and gradual decline.

is a rare movement disorder caused by toxic exposure damaging the brain.

is a rare neurodegenerative disorder causing parkinsonism, balance problems, and cognitive changes.

is a rare disorder causing sudden episodes of unusual movements.

is a rare inflammatory disease affecting joints and other body parts.

is a rare childhood disease that can affect multiple body systems.

is a rare disease causing blood vessel inflammation in children.

is a group of uncommon nerve disorders affecting movement, feeling, or both.

causes early puberty from hormones made outside the brain's normal control.

is early puberty in girls caused by hormones outside the brain.

is a rare neurodevelopmental condition affecting communication, behavior, and social interaction.

is a group of uncommon skin conditions triggered by sunlight exposure.

causes unusually early physical signs of puberty in children.

is unusually early puberty in girls, often needing medical evaluation.