is a rare genetic condition causing extra fingers or toes and nearsightedness.

is a rare germ cell tumor that can affect ovaries or testes.

is a rare ovarian germ cell tumor that contains embryo-like structures.

is a rare disorder causing nerve damage and problems with several hormones.

is a rare disorder affecting multiple hormone-producing glands and body systems.

is caused by the combined effects of many genes and environment.

is a rare inherited muscle disorder causing progressive weakness from polyglucosan buildup.

is a rare inherited muscle disease causing progressive weakness and movement problems.

is a pregnancy condition with too much amniotic fluid around the baby.

is a rare condition causing excess amniotic fluid, large brain, and seizures.

is a genetic syndrome causing multiple birth differences and higher cancer risk.

is an inherited condition causing many colon polyps and higher cancer risk.

is a brain development condition with too many small folds.

is a rare brain development disorder caused by changes in TUBB2B.

is a brain development disorder sometimes linked with underdeveloped optic nerves.

is a rare, slow-growing brain tumor often linked to seizures.

causes muscle pain and stiffness, especially in the shoulders and hips.

is an autoimmune muscle disease causing progressive, symmetric proximal weakness.

causes gradually worsening numbness, tingling, and weakness from immune-related nerve damage.

is nerve damage caused by certain medicines, often affecting feet and hands.

is nerve damage from connective tissue disease, causing numbness, weakness, or pain.

is a rare inherited disorder affecting nerves, hearing, balance, and vision.

is a genetic condition causing nerve damage, learning difficulties, and early menopause.

is a kidney infection from polyomavirus that can harm transplant function.