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Congenital Epidermolysis bullosa

Congenital epidermolysis bullosa signs & symptoms

People with congenital EB suffer from defects in the genes that encode the proteins which normally hold the skin layers together, causing the skin to tear and blister very easily. It is a group of rare skin conditions that are inherited. But are there other signs and symptoms of congenital epidermolysis bullosa? 

At what age does congenital epidermolysis bullosa start?

Congenital epidermolysis bullosa usually manifests at birth or within the first few months of life. Many babies with EB develop blisters and skin wounds immediately after delivery or soon afterwards, often following routine handling or movement. Pressure during birth can also trigger early skin damage.

In milder types of congenital epidermolysis bullosa, signs and symptoms may not appear straight away. Some children only start to show signs when they begin to crawl or walk, as increased movement places more stress on the skin. In very rare cases, these symptoms may not appear until adolescence or even adulthood.

The age at which symptoms start depends largely on the EB subtype: 

  • Severe forms, such as junctional EB or severe dystrophic EB, usually cause extensive blistering and wounds from birth or early infancy.
  • Milder forms, including some types of EB simplex, often become noticeable during early childhood as physical activity increases.
  • Very mild variants may only cause occasional blistering later in life.

Recognizing symptoms early allows healthcare teams and families to plan appropriate care, reduce complications, and support healthy growth and development. 

What are the signs and symptoms of epidermolysis bullosa?

The signs and symptoms of congenital epidermolysis bullosa vary widely in severity, but they all stem from extreme skin fragility. Many people refer to EB as “butterfly skin” because the skin tears as easily as a butterfly’s wings. 

Fragile skin and blistering

Fragile skin that blisters or tears with minimal trauma is the defining feature of all types of epidermolysis bullosa (EB). Everyday actions such as rubbing, minor knocks, or friction from clothing can cause blisters. These blisters and wounds commonly appear on areas like the palms of the hands, soles of the feet, elbows, knees, and other pressure-prone spots. They can also develop on any part of the body that is exposed to frequent movement or handling. Blisters often cause significant pain and may break open, leading to wounds that increase the risk of infection.

Blistering inside the body

In more severe forms of epidermolysis bullosa (EB), blistering affects not only the skin but also the mucous membranes. Blisters and wounds may develop inside the mouth, in the throat or oesophagus, and around the eyes or genital area. Internal lesions can interfere with eating, swallowing, and daily comfort, potentially leading to more serious complications over time.

Nail changes

Many people with epidermolysis bullosa (EB) experience changes in their fingernails and toenails. Nails may become thickened, misshapen, or damaged, and in some cases, they may be lost entirely due to repeated blistering around the nail bed. These changes can begin early in life and may impact fine motor skills and everyday activities.

Scarring and skin changes

Some subtypes of congenital epidermolysis bullosa (EB) may cause long-term scarring as blisters heal. Over time, this scarring can lead to thickened skin on the hands and feet, areas of thin or uneven skin, and small white cysts (milia) that form after the blisters heal. In dystrophic EB, scarring can become severe enough to cause the fingers or toes to fuse together, limiting movement and hand function.

Secondary complications

The skin acts as a vital protective barrier, therefore, repeated wounds increase the risk of secondary problems, such as frequent skin infections, chronic anaemia caused by the body’s ongoing effort to heal wounds, and narrowing of the oesophagus due to repeated blistering and scarring. Severe forms of EB may also affect hair, teeth, and nail development, contributing to long-term health challenges and a reduced quality of life.

Pain and discomfort

Pain is one of the main symptoms of epidermolysis bullosa, especially when blisters and wounds persist or recur frequently. Many patients require ongoing pain management as part of their daily care, particularly those with more severe forms of the condition.

Feeding and growth challenges

If EB affects the mouth, throat, and/or oesophagus, the patient might find it challenging to eat because of the pain the blistering may cause. Epidermolysis bullosa might also affect growth because it limits physical activity and movement.

Differences between EB subtypes

Each EB subtype presents its own pattern of symptoms: 

Epidermolysis bullosa simplex (EBS)

Often limited to skin blistering, especially in milder cases, although severe forms can involve widespread wounds and feeding issues.

Junctional EB (JEB)

Commonly causes severe blistering from birth and may involve mucous membranes and reduced hair growth.

Dystrophic EB

Leads to chronic blistering, significant scarring, and fusion of fingers or toes, requiring lifelong specialist care.

Kindler syndrome

Blistering may lessen with age, but often includes changes in skin colour and involvement of mucous membranes.

 

Despite these differences, all forms of epidermolysis bullosa share the same core feature: skin that blisters and breaks with minimal trauma. 

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