is a chronic sleep disorder causing sudden sleepiness and cataplexy.

is a sleep disorder causing excessive daytime sleepiness without cataplexy.

is a rare inherited mitochondrial disorder affecting nerves, muscles, vision, and development.

is a rare cancer that starts in the lining of the nose.

is a noncancerous growth in the inside of the nose.

is a rare cancer that starts in the tissues inside the nose.

is a rare cancer that starts in the tissues inside the nose.

is an early-stage cancer limited to the nasal cavity lining.

affects the inside of the nose, causing breathing problems and discomfort.

is a usually benign nasal tumor that can return or become cancerous.

is a rare cancer that starts in tissues inside the nose.

is a rare cancer that starts in smell nerve tissue.

is a rare cancer that starts in the tissues inside the nose.

is a birth defect causing a cyst or tract on the nose.

is a rare tunnel-like opening along the bridge of the nose.

is a rare birth defect where brain tissue protrudes through the nose.

is a rare, usually benign tumor of nerve and support cells.

is a rare, noncancerous birth defect with brain tissue near the nose.

is a rare, aggressive lymphoma that often starts in the nose.

is a usually benign wart-like growth inside the front of the nose.

is a fluid-filled blockage near the tear duct, often in newborns.

is a rare genetic condition affecting eyelid development and facial tissues.

is a throat cancer behind the nose, often linked to Epstein‑Barr virus.

is a condition affecting the upper throat behind the nose.