are widened small blood vessels visible near the skin or mucosa.

is a rare benign blood vessel tumor causing small painful skin spots.

is a rare, aggressive bone cancer that can weaken and destroy bone.

is a rare genetic condition affecting eye spacing, alignment, and foot shape.

is a rare genetic muscle disorder causing progressive hip and shoulder weakness.

is a rare genetic condition affecting development, learning, and sometimes growth.

is a common, usually temporary hair-shedding condition often triggered by stress.

is a genetic condition with temperature-dependent pigmentation and vision problems.

is a rare blood disorder linked to abnormal proteins and several complications.

is a rare genetic condition affecting growth, puberty, and muscle tone.

is a rare genetic condition affecting growth, development, and puberty.

is a rare genetic imprinting disorder affecting growth, puberty, and development.

is a rare genetic disorder affecting growth, development, puberty, and body composition.

is a rare genetic condition affecting brain development, nails, and movement.

causes repeated seizures that start in the brain's temporal lobe.

is a tumor in the temporal lobe affecting speech, memory, or seizures.

is a problem with the jaw joint affecting movement and comfort.

is a rare genetic disorder causing short first digits and limb differences.

is a rare genetic condition that affects brain, eye, and body development.

is inflammation or irritation of a tendon, causing pain and tenderness.

is a rare, benign fatty tumor growing in the tissue around tendons.

is a usually noncancerous joint lining tumor causing pain and swelling.

is inflammation of a tendon sheath, causing pain, swelling, and stiffness.

is inflammation of tendon coverings in the foot and ankle.