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Living with Epidermolysis bullosa simplex with mottled pigmentation

A rare form of EB simplex with fragile skin that blisters and a spotted mix of darker and lighter skin.

Understanding Epidermolysis bullosa simplex with mottled pigmentation

Epidermolysis bullosa simplex with mottled pigmentation is a rare form of EB simplex with blisters and spotty skin color.

Blistering may begin at birth. People have a mottled look, with darker and lighter spots. Skin may seem to age more quickly and bruise easily.

Signs & symptoms

Symptoms vary from person to person. GARD lists these among the most common:

  • Skin blisters
  • Mottled skin color (dark and light spots)
  • Fragile skin
  • Thickened skin on palms and soles
  • Nail changes
  • Small firm bumps (hyperkeratotic papules)

Not everyone has every symptom. GARD's list comes from the Human Phenotype Ontology.

Diagnosis

  1. Talk with your doctor

    Share the symptoms you've noticed, when they started and your family health history. Notes and photos can help.

  2. See a specialist

    Specialists who may be involved include genetic specialists and skin, hair, and nail specialists.

  3. Consider genetic testing

    Changes in KRT5 are linked to this condition. Genetic testing and counseling can help confirm a diagnosis and explain what it means for your family.

  4. Connect with expert centers

    DEBRA of America may keep lists of experts for this condition.

Care & treatment

Care team
Genetic specialists (geneticists); Skin, hair, and nail specialists (dermatologists)
Expert care
Expert lists: DEBRA of America
Treatment
GARD doesn't list specific treatments for this condition. Your care team will tailor care to your symptoms.
Research
Clinical trials and observational studies may be options. See the research section below.

General information, not medical advice. Your care team makes the decisions.

Everyday life

Living with a rare condition is easier with support.

  • Connect with DEBRA of America and other patient organizations
  • Keep notes on symptoms, changes and questions for appointments
  • Ask about patient registries that help research
  • Look into financial aid and travel resources for care visits
Bring these questions to your next doctor visit
Can genetic testing for the KRT5 gene confirm this diagnosis?
How can we protect the skin from injury and blisters?
Should I be careful with sun exposure?

Quick facts

Symptoms usually startNewborn and as an Infant
InheritanceAutosomal Dominant
GenesKRT5

Changes in the KRT5 gene cause this condition. It is autosomal dominant, which means a change in one copy of the gene can cause it.

GeneticSkin

Also known as: ebs with mottled pigmentation; ebs-mp; ebs2f; epidermolysis bullosa simplex 2f, with mottled pigmentation; simple epidermolysis bullosa with mottled pigmentation; speckled hyperpigmentation with punctate palmoplantar keratoses and childhood blistering

Patient organizations

Source: NIH GARD · Epidermolysis bullosa simplex with mottled pigmentationGARD ID 9737 · GARD page updated September 2026 · Plain-language summary by Know Rare; editorial review pending. General information, not medical advice.

You are more than your diagnosis

Perspectives from people navigating life with Epidermolysis bullosa simplex with mottled pigmentation.

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  • Eligibility is confirmed by the study team

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