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Disease Profile

Epidermolysis bullosa simplex with mottled pigmentation

Prevalence estimates on Rare Medical Network websites are calculated based on data available from numerous sources, including US and European government statistics, the NIH, Orphanet, and published epidemiologic studies. Rare disease population data is recognized to be highly variable, and based on a wide variety of source data and methodologies, so the prevalence data on this site should be assumed to be estimated and cannot be considered to be absolutely correct.


US Estimated

Europe Estimated

Age of onset






Autosomal dominant A pathogenic variant in only one gene copy in each cell is sufficient to cause an autosomal dominant disease.


Autosomal recessive Pathogenic variants in both copies of each gene of the chromosome are needed to cause an autosomal recessive disease and observe the mutant phenotype.


dominant X-linked dominant inheritance, sometimes referred to as X-linked dominance, is a mode of genetic inheritance by which a dominant gene is carried on the X chromosome.


recessive Pathogenic variants in both copies of a gene on the X chromosome cause an X-linked recessive disorder.


Mitochondrial or multigenic Mitochondrial genetic disorders can be caused by changes (mutations) in either the mitochondrial DNA or nuclear DNA that lead to dysfunction of the mitochondria and inadequate production of energy.

Multigenic or multifactor Inheritance involving many factors, of which at least one is genetic but none is of overwhelming importance, as in the causation of a disease by multiple genetic and environmental factors.


Not applicable


Other names (AKA)

EBS with mottled pigmentation; EBS-MP; Speckled hyperpigmentation, palmo-plantar punctate keratoses and childhood blistering


Congenital and Genetic Diseases; Skin Diseases


Epidermolysis bullosa simplex with mottled pigmentation is a rare form of epidermolysis bullosa (EB). EB is a group of genetic conditions that cause the skin to be very fragile and to blister easily. Erosions and blisters form in response to minor injury or friction, such as rubbing or scratching.[2310] In EB simplex with mottled pigmentation, blistering may begin at birth.[1] People with this condition have a mottled appearance of their skin (ie., darker and lighter colored spots of skin).[1] Their skin may seem to age more quickly and bruise easily.[1] EB simplex with mottled pigmentation is caused by a mutation in the keratin-5 gene (KRT5) and is inherited in an autosomal dominant fashion.[1]


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.

Medical Terms Other Names
Learn More:
80%-99% of people have these symptoms
Abnormal blistering of the skin
Blistering, generalized

[ more ]

Hypopigmented skin patches
Patchy loss of skin color
Reticulated skin pigmentation
30%-79% of people have these symptoms
Bruising susceptibility
Bruise easily
Easy bruisability
Easy bruising

[ more ]

Dermal atrophy
Skin degeneration
Nail dystrophy
Poor nail formation
Palmoplantar keratoderma
Thickening of palms and soles
Prematurely aged appearance
Precociously senile appearance
5%-29% of people have these symptoms
Milk spot
Percent of people who have these symptoms is not available through HPO
Autosomal dominant inheritance
Discrete 2 to 5-mm hyperand hypopigmented macules
Mottled pigmentation of the trunk and proximal extremities
Nail dysplasia
Atypical nail growth
Thick nail
Thickened nails

[ more ]

Punctate palmoplantar hyperkeratosis


Making a diagnosis for a genetic or rare disease can often be challenging. Healthcare professionals typically look at a person’s medical history, symptoms, physical exam, and laboratory test results in order to make a diagnosis. The following resources provide information relating to diagnosis and testing for this condition. If you have questions about getting a diagnosis, you should contact a healthcare professional.

Testing Resources

  • The Genetic Testing Registry (GTR) provides information about the genetic tests for this condition. The intended audience for the GTR is health care providers and researchers. Patients and consumers with specific questions about a genetic test should contact a health care provider or a genetics professional.


    Support and advocacy groups can help you connect with other patients and families, and they can provide valuable services. Many develop patient-centered information and are the driving force behind research for better treatments and possible cures. They can direct you to research, resources, and services. Many organizations also have experts who serve as medical advisors or provide lists of doctors/clinics. Visit the group’s website or contact them to learn about the services they offer. Inclusion on this list is not an endorsement by GARD.

    Organizations Supporting this Disease

      Social Networking Websites

      • RareConnect is an online social network for patients and families to connect with one another and share their experience living with a rare disease. The project is a joint collaboration between EURORDIS (European Rare Disease Organisation) and NORD (National Organization for Rare Disorders). Click on the link above to view the community for Epidermolysis bullosa.

        Learn more

        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 Epidermolysis bullosa simplex with mottled pigmentation. Click on the link to view a sample search on this topic.


          1. Epidermolysisi bullosa simplex with mottled pigmentation. OMIM. 2009; https://omim.org/entry/131960. Accessed 9/7/2011.