National Center for Advancing and Translational Sciences Genetic and Rare Diseases Information Center, a program of the National Center for Advancing and Translational Sciences

Ameloonychohypohidrotic syndrome



Other Names:
Hypocalcified-hypoplastic enamel, onycholysis with subungual hyperkeratosis, and hypohidrosis
Categories:

The following summary is from Orphanet, a European reference portal for information on rare diseases and orphan drugs.
orphanet

Orpha Number: 1028

Definition
A rare ectodermal dysplasia syndrome characterized by the association of hypocalcified and hypoplastic tooth enamel, distal finger and toenail onycholysis with subungueal hyperkeratosis, and functional hypohidrosis. Additional manifestations include seborrheic scalp dermatitis and rough, dry skin. Lacrymal punctae may be occasionally absent. There have been no further descriptions in the literature since 1975.

Visit the Orphanet disease page for more resources.
Last updated: 6/1/2019

This table lists symptoms that people with this disease may have. For most diseases, symptoms will vary from person to person. People with the same disease may not have all the symptoms listed. This information comes from a database called the Human Phenotype Ontology (HPO) . The HPO collects information on symptoms that have been described in medical resources. The HPO is updated regularly. Use the HPO ID to access more in-depth information about a symptom.

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Medical Terms Other Names
Learn More:
HPO ID
80%-99% of people have these symptoms
Abnormal fingernail morphology
Abnormal fingernails
Abnormality of the fingernails
[ more ]
0001231
Abnormality of dental enamel
Abnormal tooth enamel
Enamel abnormalities
Enamel abnormality
[ more ]
0000682
Hyperkeratosis 0000962
Hypohidrosis
Decreased ability to sweat
Decreased sweating
Sweating, decreased
[ more ]
0000966
Hypoplastic toenails
Underdeveloped toenails
0001800
Onycholysis
Detachment of nail
0001806
Yellow-brown discoloration of the teeth
Yellow-brown discolored teeth
0006286
30%-79% of people have these symptoms
Abnormality of dental morphology
Abnormality of dental shape
Abnormally shaped teeth
Deformity of teeth
Dental deformity
Dental malformations
Malformed teeth
Misshapen teeth
Misshapened teeth
[ more ]
0006482
Advanced eruption of teeth
Early eruption of teeth
0006288
Delayed eruption of teeth
Delayed eruption
Delayed teeth eruption
Delayed tooth eruption
Eruption, delayed
Late eruption of teeth
Late tooth eruption
[ more ]
0000684
Dry skin 0000958
Fine hair
Fine hair shaft
Fine hair texture
Thin hair shaft
Thin hair texture
[ more ]
0002213
Reduced number of teeth
Decreased tooth count
0009804
5%-29% of people have these symptoms
Everted lower lip vermilion
Drooping lower lip
Outward turned lower lip
[ more ]
0000232
Percent of people who have these symptoms is not available through HPO
Abnormal hair morphology
Abnormality of the hair
Hair abnormality
[ more ]
0001595
Autosomal dominant inheritance 0000006
Marked delay in eruption of permanent teeth
Severe delay of eruption of adult teeth
Severe delay of eruption of permanent teeth
Very late eruption of adult teeth
Very late eruption of permanent teeth
[ more ]
0006291
Seborrheic dermatitis 0001051
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Last updated: 7/1/2020

If you need medical advice, you can look for doctors or other healthcare professionals who have experience with this disease. You may find these specialists through advocacy organizations, clinical trials, or articles published in medical journals. You may also want to contact a university or tertiary medical center in your area, because these centers tend to see more complex cases and have the latest technology and treatments.

If you can’t find a specialist in your local area, try contacting national or international specialists. They may be able to refer you to someone they know through conferences or research efforts. Some specialists may be willing to consult with you or your local doctors over the phone or by email if you can't travel to them for care.

You can find more tips in our guide, How to Find a Disease Specialist. We also encourage you to explore the rest of this page to find resources that can help you find specialists.

Healthcare Resources


Research helps us better understand diseases and can lead to advances in diagnosis and treatment. This section provides resources to help you learn about medical research and ways to get involved.

Clinical Research Resources

  • The Centers for Mendelian Genomics program is working to discover the causes of rare genetic disorders. For more information about applying to the research study, please visit their website.

These resources provide more information about this condition or associated symptoms. The in-depth resources contain medical and scientific language that may be hard to understand. You may want to review these resources with a medical professional.

In-Depth Information

  • The Monarch Initiative brings together data about this condition from humans and other species to help physicians and biomedical researchers. Monarch’s tools are designed to make it easier to compare the signs and symptoms (phenotypes) of different diseases and discover common features. This initiative is a collaboration between several academic institutions across the world and is funded by the National Institutes of Health. Visit the website to explore the biology of this condition.
  • Online Mendelian Inheritance in Man (OMIM) is a catalog of human genes and genetic disorders. Each entry has a summary of related medical articles. It is meant for health care professionals and researchers. OMIM is maintained by Johns Hopkins University School of Medicine. 
  • Orphanet is a European reference portal for information on rare diseases and orphan drugs. Access to this database is free of charge.
  • PubMed is a searchable database of medical literature and lists journal articles that discuss Ameloonychohypohidrotic syndrome. Click on the link to view a sample search on this topic.

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