Epidermolytic Hyperkeratosis: Causes, Symptoms, and Treatment
Medically reviewed by Sumiran Racherla, MD, Internal Medicine. Last reviewed: October 23, 2026.
What kind of doctor treats Epidermolytic Hyperkeratosis?
A dermatologist (a skin doctor) usually treats this condition. A clinical geneticist (a doctor who treats inherited conditions) can explain the genetic cause. A pediatrician (a children's doctor) often cares for babies and children. A direct primary care or concierge doctor can be a first stop for an evaluation and can refer you to a specialist when needed.
What is epidermolytic hyperkeratosis?
Epidermolytic hyperkeratosis is a skin disorder that is present at birth. It is also called epidermolytic ichthyosis. It is part of a group of conditions called ichthyoses, which have scaly skin in common. In this condition, the skin is thick but not scaly as in some of the other conditions in the group. It affects approximately 1 in 200,000 to 300,000 people worldwide.
Symptoms
Affected babies may have very red skin, called erythroderma, and severe blisters. Newborns are missing the protection of normal skin. They are at risk of becoming dehydrated and of getting skin infections or sepsis, an infection throughout the body.
As people get older, blistering is less frequent and the redness becomes less evident. The skin becomes thick, especially over joints, in places where skin touches skin, and on the scalp or neck. This thick skin is usually darker than normal. Bacteria can grow in the thick skin and often cause a distinct odor.
There are two types. People with PS-type also have thick skin on the palms of the hands and soles of the feet. People with NPS-type do not have extensive thick skin on the palms and soles.
Causes and who gets it
Changes in the KRT1 or KRT10 genes cause this condition. These genes make keratin proteins, which give strength to the outer layer of the skin. With the gene changes, the keratin cannot form strong networks, so skin cells are fragile and easily damaged. This can lead to blisters from friction or mild injury. Researchers do not know how the gene changes make skin cells overgrow and thicken the skin.
About half of cases come from new gene changes in people with no family history. When the condition is inherited, it is usually autosomal dominant. This means one changed copy of the gene in each cell is enough to cause it. Very rarely, it is inherited in an autosomal recessive pattern.
How doctors diagnose it
For ichthyosis, health care providers usually ask about family and medical history. They also examine the skin, hair, and nails closely. Sometimes a skin biopsy is done to look at a skin sample under a microscope. A genetic test can find the changed gene, usually from a blood sample or a swab from the mouth.
Treatment
There is currently no cure for ichthyosis. Treatment aims to reduce redness of the skin, thick scales, and itching. Most people with ichthyosis need treatment for life.
- Hydrating the skin with creams, lotions, or ointments helps trap moisture and relieve dryness.
- This works best when the products are applied while the skin is moist.
- Long baths can soften and release scales.
- A retinoid, taken by mouth or put on the skin, is a type of medicine that can decrease scaling.
- Some people may also use keratolytic products, which help loosen scales.
- These can irritate the skin and can have side effects if used in large amounts.
Talk to your doctor before using any treatment option. A humidifier can keep air from drying out the skin. Loose cotton clothes may be less irritating.
When to see a doctor
See a doctor if a baby is born with very red skin and severe blisters. Newborns with this condition can become dehydrated or get serious infections. Blisters can break and leave wounds, so ask a doctor about any open wounds. Call 911 or go to the emergency room if a child has trouble breathing, a seizure, or a sudden change in mental state, such as confusion.
How a direct primary care or concierge doctor fits in
A direct primary care doctor charges a flat monthly fee instead of billing insurance, while a concierge doctor usually charges more and often works alongside insurance. Care for this condition may involve several specialists, so such a doctor can help keep visits and care plans organized.
Common questions
Is epidermolytic hyperkeratosis inherited?
Yes, it is usually inherited in an autosomal dominant pattern. This means one changed copy of the gene is enough to cause it. About half of cases come from new gene changes in people with no family history.
Can epidermolytic hyperkeratosis be cured?
No, there is currently no cure for ichthyosis, the group of skin conditions that includes it. Treatments can help manage symptoms such as dryness, thick scales, and itching.
Do the blisters go away as a child grows?
Blisters become less frequent as people get older. The redness also becomes less evident, but the skin becomes thick.
Is epidermolytic hyperkeratosis a type of ichthyosis?
Yes, it is part of a group of conditions called ichthyoses. Another name for it is epidermolytic ichthyosis.
Sources
- MedlinePlus Genetics - Epidermolytic hyperkeratosis
- National Institute of Arthritis and Musculoskeletal and Skin Diseases - Ichthyosis Symptoms, Types, Causes, and Risk Factors
- National Institute of Arthritis and Musculoskeletal and Skin Diseases - Ichthyosis: Diagnosis, Treatment, and Steps to Take
Medical Disclaimer
This content is for general educational and informational purposes only and is not medical advice. It is not a substitute for professional medical advice, diagnosis, or treatment, and reading it does not create a doctor-patient relationship. Always seek the advice of your physician or another qualified health provider with any questions about a medical condition, and never disregard or delay seeking professional advice because of something you read here. If you think you may have a medical emergency, call 911 (or your local emergency number) immediately.
