is a heart valve problem that restricts blood flow to the lungs.

is a rare genetic condition that can affect development and learning.

is a rare genetic condition affecting facial features, bones, and joint movement.

is a genetic condition causing cleft lip/palate and lower lip pits.

is a rare genetic condition causing developmental delay and distinctive facial features.

is a rare genetic disorder with developmental delays and distinctive facial features.

is a genetic condition causing seizures that begin at different ages.

is a rare prion disease causing progressive thinking and movement problems.

is a rare inherited amyloidosis causing protein buildup in organs and tissues.

is a rare, fatal brain disease caused by abnormal prion proteins.

is a rare Guillain-Barré syndrome subtype causing weakness and abnormal reflexes.

is an enlargement of scrotal veins that can affect fertility.

are enlarged, twisted leg veins causing aching, heaviness, and swelling.

is an inherited heme disorder causing skin sensitivity and sudden nerve symptoms.

is a severe, highly contagious smallpox infection caused by the variola virus.

is a milder form of smallpox caused by variola virus.

is a group of abnormal blood vessel growths or malformations.

is a rare cancer that starts in blood vessel cells.

is a decline in thinking and memory from reduced brain blood flow.

is a group of blood vessel problems that reduce healthy blood flow.

is a rare inherited disorder that weakens blood vessels and organs.

is a rare genetic disorder affecting blood vessels, tissues, and brain development.

is a disorder affecting blood vessel function and the body's clotting process.

is spinal cord blood vessel disorder causing weakness, numbness, and walking problems.