BACK TOTOP Browse A-ZSearchBrowse A-ZABCDEFGHIJKLMNOPQRSTUVWXYZ0-9 E-mail FormEmail ResultsName:Email address:Recipients Name:Recipients address:Message: Print-FriendlyBookmarksbookmarks-menuLow nasal bridgeSaddle noseA low nasal bridge is the flattening of the top part of the nose. Considerations Genetic diseases or infections may cause decreased growth of the bridge of nose. A decrease in the height of the bridge of nose is best seen from a side view of the face. Causes Causes may include:Cleidocranial dysostosis Cleidocranial dysostosisCleidocranial dysostosis is a disorder involving the abnormal development of bones in the skull and collar (clavicle) area.Read Article Now Book Mark Article Congenital syphilis Congenital syphilisCongenital syphilis is a severe, disabling, and often life-threatening infection seen in infants whose mothers were infected and not fully treated. ...Read Article Now Book Mark Article Down syndrome Down syndromeDown syndrome is a genetic condition in which a person has 47 chromosomes instead of the usual 46.Read Article Now Book Mark Article Normal variation Other syndromes that are present at birth (congenital) Williams syndromeWilliams syndromeWilliams syndrome is a rare disorder that can lead to problems with development.ImageRead Article Now Book Mark Article When to Contact a Medical Professional Contact your health care provider if you have questions about the shape of your child's nose. What to Expect at Your Office Visit The provider will do a physical exam. The provider may ask questions about your child's family and medical history.Laboratory studies may include:Chromosome studies Chromosome studiesKaryotyping is a test to examine chromosomes in a sample of cells. This test can help identify genetic problems as the cause of a disorder or diseas...ImageRead Article Now Book Mark Article Enzyme assays (blood tests to measure specific enzyme levels) EnzymeEnzymes are complex proteins that cause a specific chemical change in all parts of the body. For example, they can help break down the foods we eat ...Read Article Now Book Mark Article Metabolic studies X-rays Open ReferencesReferencesFarrior EH. Special rhinoplasty techniques. In: Flint PW, Francis HW, Haughey BH, et al, eds. Cummings Otolaryngology. 7th ed. Philadelphia, PA: Elsevier; 2021:chap 32.Madan-Khetarpal S, Arnold G, Ortiz D. Genetic disorders and dysmorphic conditions. In: Zitelli BJ, McIntire SC, Nowalk AJ, Garrison J, eds. Zitelli and Davis' Atlas of Pediatric Physical Diagnosis. 8th ed. Philadelphia, PA: Elsevier; 2023:chap 1.Slavotinek AM. Dysmorphology. In: Kliegman RM, St. Geme JW, Blum NJ, Shah SS, Tasker RC, Wilson KM, eds. Nelson Textbook of Pediatrics. 21st ed. Philadelphia, PA: Elsevier; 2020:chap 128.AllVideoImagesTogThe face - illustration The physical landmarks of the human face are very similar from one face to another.The faceillustrationLow nasal bridge - illustration A low or absent nasal bridge can occur in association with infectious diseases or genetic diseases.Low nasal bridgeillustrationThe face - illustration The physical landmarks of the human face are very similar from one face to another.The faceillustrationLow nasal bridge - illustration A low or absent nasal bridge can occur in association with infectious diseases or genetic diseases.Low nasal bridgeillustrationRelated Information Review Date: 2/24/2022 Reviewed By: Neil K. Kaneshiro, MD, MHA, Clinical Professor of Pediatrics, University of Washington School of Medicine, Seattle, WA. Also reviewed by David Zieve, MD, MHA, Medical Director, Brenda Conaway, Editorial Director, and the A.D.A.M. Editorial team. The information provided herein should not be used during any medical emergency or for the diagnosis or treatment of any medical condition. A licensed medical professional should be consulted for diagnosis and treatment of any and all medical conditions. Links to other sites are provided for information only -- they do not constitute endorsements of those other sites. © 1997- © 1997- All rights reserved. A.D.A.M. content is best viewed in IE9 or above, Firefox and Google Chrome browser.Content is best viewed in IE9 or above, Firefox and Google Chrome browser.