Introduction

You've come to the right website if you want to know how skin lesions change over time in Epidermolytic Ichthyosis (EI). This article will guide you through how lesions change as one grows up, what causes them and what the treatment is like. You'll feel sure in your understanding of how EI changes at the end. 

Overview

Epidermolytic ichthyosis is a major type of ichthyosis (a group of inherited skin conditions). It usually shows up at birth with red skin, blisters and fragile skin. In the past, just to not get you confused before we continue, doctors called it epidermolytic hyperkeratosis or bullous congenital ichthyosiform erythroderma.

The condition happens because of small changes in certain genes (KRT1 and KRT10). Those make keratin, which is a protein that keeps your skin strong. When the genes don’t work properly, the skin cells are weaker than normal. This causes blistering early in life and thick/scaly skin later on.

This condition affects 1 in 100,000-300,000 babies, which makes it quite rare. Boys and girls are affected equally. In half of the cases, it happens by chance, while in others, it is passed down from parents. Rarely, it can be passed on in a different way if only some cells carry the mutation.¹

Early presentation at birth

If your newborn has EI, you will notice extremely fragile skin right from when your little one is born. Babies come out with widespread redness, blistering and raw, peeled areas of skin. At first glance, it can look as if they have severe burns in places.² Even minor friction (like normal handling or clothing) can cause new blisters or the outer skin to peel off, which will most likely leave tender denuded patches.¹ Newborns with EI are at a significant risk of serious consequences because their skin barrier is so fragile. The damaged skin can quickly lose fluid and heat, which can cause dehydration or low body temperature. The open wounds can also let germs in, which can cause serious infections or even sepsis. Some babies with ichthyosis may need extra feedings or a feeding tube to receive the nutrition they need.^1,2

Infancy and early childhood

As your child grows out of the newborn stage, you’ll likely see the blistering episodes start to decline. In the first couple of years, the skin slowly becomes tougher. Instead of getting blisters all the time, you'll notice that some patches of skin grow thick and scaly. So the skin around the creases of the knees, elbows and armpits develops a bumpy, rigid texture. Skin infections can appear frequently and lead to a distinct odour. Sweating may decrease in childhood but tends to increase as years pass.³

School age to adolescence 

So when you’re little, epidermolytic ichthyosis often means a lot of redness and blistering. As you grow older, those blisters usually calm down and the thickened scaly skin called hyperkeratosis becomes the main thing you notice.⁴ On top of the scaling, you may notice that your skin’s got darker shades. So shades of brown, grey, or white, especially in folds and flexural areas (with skin folds that can bend, such as the inner elbows, back of the knees, neck, and wrists). This stage can also bring new frustrations like itching, painful cracks that split open or even some stiffness if the thickened skin builds up around your joints.¹

Adulthood 

When you reach adulthood, epidermolytic ichthyosis tends to show itself in new ways. The main things you notice are the thickened skin, patches of raw erosion and sometimes blisters that still appear now and then.⁵ Blister formation decreases with increasing age and ichthyosis gets worse. It’s commonly associated with pruritus, anhidrosis and painful cracking. Skin involvement is often widespread in the majority of cases. However, a few patients will only show patchy or very limited skin lesions.⁶

Living with the condition also means dealing with very dry skin, constant itching and painful cracks that split open in the thickened areas. It might not seem so obvious, but these aren’t just physical problems; they can also affect how you feel about yourself. The look and feel of your skin might cause stress or make you self-conscious. Some people affected by EI describe struggling with feelings of inferiority because of it. It is important to remember that you or your loved one isn’t alone and that these challenges are part of the condition that can make it easier to face them. It might seem surprising but many adults with EI find ways to adapt their daily care and boost their confidence over time.⁵

Underlying biology 

Epidermolytic ichthyosis occurs as a result of changes in the keratin genes (KRT1 and KRT10). These genes normally make keratin proteins that form a strong framework in the skin, because it gives it toughness and flexibility. In healthy skin, basal cells produce one set of keratins, but as they move upward, they switch to making K1 and K10, which bundle into strong fibres. In EI, mutations stop these proteins from forming correctly. Instead, the fibres clump together, leaving the skin fragile at birth and later thickened and scaly. This faulty keratin network is the root cause of the condition.⁵

Treatment across the life course 

Treatment for epidermolytic ichthyosis focuses on keeping your skin as healthy and comfortable as possible. In infancy, care usually happens in a hospital setting where doctors keep a close eye on hydration, infection and skin protection.⁷ The baby is always safer with a doctor. As you grow older, the main goal is to soften and reduce the thickened skin. This involves daily use of moisturisers and keratolytic creams with ingredients like glycerin, lactic acid or urea. Disciplined use of those can help smooth out the scales, although some of these products may sting.⁷ Stronger medicines (such as retinoids) can make a big difference by slowing down skin overgrowth, but they have to be used carefully and at low doses because they can also make the skin more fragile.^5,7 Antibacterial washes, bleach baths or antibiotics are sometimes needed when infections flare up.⁷ Beyond creams and tablets, living well with EI also involves practical lifestyle choices. For example, wearing loose cotton clothing, avoiding overheating and moisturising regularly. Many people also find emotional support important, which could be done through counselling or connecting with others who live with EI.⁵

Summary

Epidermolytic ichthyosis (EI) is a rare genetic skin condition with around 1 in 100,000-300,000 chances of happening. The changes in the KRT1 and KRT10 genes are what cause EI. The condition weakens the skin’s structure and the way it works, which leads to fragile skin, blistering at birth and later dense, rough patches. As we’ve discussed, symptoms evolve with age. Newborns come into this world with severe blistering and a risk of dehydration or infection. During infancy, blistering reduces as thickened scaly skin develops. By school age and adolescence, hyperkeratosis and darker scaling dominate, sometimes causing itching, painful cracks and stiffness. In adulthood, blistering lessens but chronic dryness, fissuring, and psychological impacts persist. Treatment focuses on symptom management rather than cure. Care involves moisturisers, keratolytic creams, occasional antibiotics and careful use of retinoids. Don’t forget about practicality, such as loose clothing and avoiding overheating. Emotional support also plays an important role, helping individuals manage self-image and adapt daily routines for a better quality of life.