is a usually slow-growing tumor at the skull base near the brainstem.

is a rare skull bone infection, usually linked to ear infection.

is a usually benign skull-base tumor that can affect nearby nerves.

is a genetic condition causing intestinal polyps, lip spots, and cancer risk.

causes scar tissue in the penis, leading to curvature and painful erections.

is a childhood syndrome causing repeated fevers, mouth sores, and sore throat.

is a rare genetic condition affecting skull, face, hands, and feet.

is a severe genetic craniosynostosis causing cloverleaf skull and limb differences.

is a rare genetic condition causing skull, face, and limb differences.

is a very rare genetic condition affecting physical development and appearance.

is a rare inherited disorder affecting sugar processing and many body systems.

is a rare inherited disorder of glycosylation causing immune and developmental problems.

is a rare condition causing birthmarks and problems with blood vessels.

is a rare inflammatory eye reaction to lens proteins after injury.

is a rare glaucoma linked to inherited eye development disorders.

is a painful eye condition caused by proteins leaking from cataract.

is a rare fungal infection caused by dark-pigmented molds in body tissues.

is an immune disorder that weakens the body's ability to kill germs.

is a rare birthmark condition causing blue-gray patches and port-wine stains.

is a rare birth condition causing marbled skin and blue-gray patches.

is a rare genetic skin disorder causing birthmarks and other problems.

combines vascular and pigment birthmarks; rare, sometimes involves eyes or brain.

is a rare skin condition causing birthmarks and sometimes other body changes.

causes temporary finger bone lesions, swelling, and pain, usually in children.