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

is a rare genetic disorder causing developmental problems and abnormal sweating.

is an inherited muscle disorder causing early weakness in hands and feet.

is a genetic condition in males caused by an extra X chromosome.

is a rare genetic disorder with neck vertebrae fusion, myopathy, facial differences.

is a rare condition where some neck bones are fused from birth.

is a rare genetic condition causing fused neck bones and limited movement.

is a rare genetic condition causing some neck bones to fuse.

is a rare condition causing blood vessel, soft tissue, and bone overgrowth.

is a rare brain syndrome causing behavior, memory, and emotional changes.

is a rare genetic condition causing short stature and bone problems.

is a rare genetic disorder with eye and skull abnormalities.

is a rare genetic disorder with knuckle pads, white nails, hearing loss.

is a rare childhood foot disorder affecting the navicular bone.

is a rare bulge in the aorta that can affect swallowing.

is a genetic condition causing developmental delay, hypotonia, intellectual disability, congenital anomalies.

is a rare genetic syndrome causing developmental delay and low muscle tone.

is a viral illness that can cause fever, bleeding, and kidney problems.

is a rare genetic overgrowth condition causing developmental delays and distinctive features.

is a rare inherited disorder with low neutrophils (neutropenia), causing serious infections.

is a rare genetic condition causing spinal, heart, and facial differences.

is a rare inherited disorder that damages the brain, nerves, and movement.

is a rare inherited skin disorder causing widespread thickened skin.

is a rare metastatic ovarian tumor, usually spreading from stomach cancer.