{"id":6900,"date":"2026-07-31T09:39:41","date_gmt":"2026-07-31T09:39:41","guid":{"rendered":"https:\/\/www.london-dermatology-centre.co.uk\/blog\/?p=6900"},"modified":"2026-07-31T09:39:43","modified_gmt":"2026-07-31T09:39:43","slug":"autoimmune-blistering-skin-diseases-children","status":"publish","type":"post","link":"https:\/\/www.london-dermatology-centre.co.uk\/blog\/autoimmune-blistering-skin-diseases-children\/","title":{"rendered":"Autoimmune Blistering Skin Diseases in Children: An Overview for Parents"},"content":{"rendered":"\n

If your child develops unexplained blisters, you may worry that they have an infection, an allergic reaction, or another serious skin condition. Many childhood blisters are caused by relatively common problems such as infections, eczema or friction, but a small number are linked to rare autoimmune blistering skin diseases.<\/p>\n\n\n\n

These conditions develop when your child\u2019s immune system mistakenly targets proteins that help hold the layers of the skin or mucous membranes together, causing blisters or sore areas to form. Although they are not contagious, early medical assessment is important so your child can receive appropriate evaluation and, where possible, a confirmed diagnosis and suitable treatment plan.<\/p>\n\n\n\n

What Is an Autoimmune Blistering Skin Disease?<\/strong><\/h2>\n\n\n\n

Your child’s immune system normally protects them from infections, but in an autoimmune blistering skin disease, it mistakenly attacks healthy proteins that help hold the skin together. This causes the layers of skin to separate, allowing fluid to collect and form blisters.<\/p>\n\n\n\n

You may notice that some blisters are firm and remain intact, while others break easily and leave painful raw areas. Because several conditions can look similar, your child’s healthcare professional may recommend specialised tests to confirm the diagnosis and guide the most appropriate treatment.<\/p>\n\n\n\n

Why Do These Conditions Develop?<\/strong><\/h2>\n\n\n\n

The exact reason these conditions develop is often unknown. They may involve a combination of immune-system susceptibility, genetic factors and environmental triggers. Some specific disorders can be associated with medicines, infections or other conditions, such as coeliac disease. They are not caused by poor hygiene or anything you or your child have done.<\/p>\n\n\n\n

Do not make routine changes to your child\u2019s prescribed medicines without medical advice. However, if a painful, spreading, blistering or peeling rash begins after your child starts a new medicine, call 999 or go to A&E immediately. Take the medicine packaging or an up-to-date medicine list with you.<\/p>\n\n\n\n

Evidence Note: Why Specialist Diagnosis Matters<\/strong><\/p>\n\n\n\n

Autoimmune blistering diseases are rare in children and can resemble more common skin conditions. International dermatology guidance recommends combining clinical assessment with tests such as skin biopsy and direct immunofluorescence to confirm the diagnosis and guide treatment decisions.<\/p>\n\n\n\n

What Do Autoimmune Blisters Look Like?<\/strong><\/h2>\n\n\n\n

You may notice that your child’s blisters look different depending on the underlying condition. Some blisters are firm and filled with clear fluid, while others break easily and leave painful sores or crusted areas. Your child may also experience itching, stinging, or pain before or alongside the blisters.<\/p>\n\n\n\n

You might see blisters appear in clusters or rings, and the surrounding skin can look red, purple, grey, brown, or darker than the surrounding area depending on your child’s skin tone. Taking photographs as the rash changes can be helpful for your healthcare professional, but you should avoid bursting blisters yourself.<\/p>\n\n\n\n

Linear IgA Disease in Children<\/strong><\/h2>\n\n\n\n

Linear IgA disease is a rare autoimmune blistering skin condition that can affect your child\u2019s skin and, in some cases, the mouth, eyes, or genital area. You may notice firm, itchy blisters on your child’s abdomen, groin, thighs, hands, feet, or around the mouth, and new blisters can sometimes appear around older ones.<\/p>\n\n\n\n

Seek urgent same-day medical assessment if your child develops blisters around the eyes, eye redness, eye pain, light sensitivity or any change in vision. Mouth blisters also need urgent assessment if they make drinking or swallowing difficult.<\/p>\n\n\n\n

Pemphigus Vulgaris in Children<\/strong><\/h2>\n\n\n\n

Pemphigus vulgaris is a very rare autoimmune blistering skin disease in children. If your child has this condition, you may notice fragile blisters that break easily and leave painful sores, especially inside the mouth, making eating, drinking, or brushing their teeth uncomfortable.<\/p>\n\n\n\n

You should seek specialist medical advice if your child has persistent mouth sores together with blistering or peeling skin. Early diagnosis and treatment may help control the condition, relieve symptoms, and reduce the likelihood of complications.<\/p>\n\n\n\n

Pemphigus Foliaceus and Other Pemphigus Types<\/strong><\/h2>\n\n\n\n
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If your child has pemphigus foliaceus, you may notice scaly, crusted, or sore areas on the scalp, face, chest, or back rather than large, intact blisters. Unlike pemphigus vulgaris, this type does not usually affect the mouth or other mucous membranes.<\/p>\n\n\n\n

You should remember that pemphigus is a group of different conditions rather than a single disease. Your child’s healthcare professional will use specialised tests to identify the exact type so they can recommend the most appropriate treatment and follow-up.<\/p>\n\n\n\n

Selected Autoimmune Blistering Conditions in Children: At a Glance<\/strong><\/h2>\n\n\n\n
Condition<\/strong><\/td>Typical Features<\/strong><\/td>Commonly Affected Areas<\/strong><\/td>Main Treatment<\/strong><\/td><\/tr><\/thead>
Linear IgA Disease (Chronic Bullous Disease of Childhood)<\/td>Tense, itchy blisters that may form a “string of pearls” pattern; relapsing course<\/td>Lower abdomen, groin, thighs, genital area, around the mouth; may affect the eyes or mouth<\/td>Topical corticosteroids may be sufficient for mild or limited disease. Dapsone is commonly used as a systemic treatment for moderate-to-severe disease in suitable children, with regular blood monitoring for possible side effects<\/td><\/tr>
Bullous Pemphigoid<\/td>Firm, tense blisters with intense itching; may be preceded by hive-like patches<\/td>Palms and soles (especially in infants), trunk, limbs, face and nappy area<\/td>Potent topical corticosteroids may be used for localised disease; oral corticosteroids or steroid-sparing medicines may be considered for more extensive disease under specialist supervision<\/td><\/tr>
Pemphigus Foliaceus<\/td>Superficial blisters that quickly become scaly, crusted or raw patches; mouth involvement is uncommon<\/td>Scalp, face, chest and upper back<\/td>Topical corticosteroids may be considered for mild, limited disease. More extensive disease may require systemic corticosteroids, steroid-sparing medicines, or other immune-modifying treatments under specialist supervision<\/td><\/tr>
Mucous Membrane Pemphigoid<\/td>Persistent blistering and scarring affecting mucosal surfaces<\/td>Mouth, eyes, nose and genital area<\/td>Specialist immunosuppressive treatment with close ophthalmology follow-up and multidisciplinary care<\/td><\/tr>
Epidermolysis Bullosa Acquisita<\/td>Inflammatory or trauma-related tense blisters; some forms heal with scarring and milia<\/td>Hands, feet, knees, elbows and other trauma-prone areas. The mouth, eyes and other mucous membranes may also be affected<\/td>Individualised immunosuppressive therapy and protective wound care<\/td><\/tr><\/tbody><\/table><\/figure>\n\n\n\n

This table provides an overview rather than a complete list. Other rare immune-related blistering conditions may also be considered depending on your child\u2019s symptoms and test results.<\/p>\n\n\n\n

Blisters That May Have a Different Cause<\/strong><\/h2>\n\n\n\n

Your child’s blisters may not be caused by an autoimmune condition. More common causes include infections, eczema, allergic reactions, insect bites, burns, or friction, and these conditions often need different treatments.<\/p>\n\n\n\n

You should avoid using leftover creams or medicines without medical advice, even if the rash looks familiar. If your child develops widespread blisters, fever, severe pain, or blisters involving the mouth or eyes, seek urgent medical assessment.<\/p>\n\n\n\n

When Blistering Requires Urgent Medical Help<\/strong><\/h2>\n\n\n\n

Seek urgent same-day medical assessment if your child\u2019s blisters spread quickly, cover a large area, are accompanied by fever or severe pain, or your child seems generally unwell. Go to A&E immediately if the skin is extensively blistering or peeling, particularly if this began after a new medicine, or if painful mouth sores prevent your child from drinking.<\/p>\n\n\n\n

Seek urgent same-day assessment for signs of dehydration, eye pain, marked eye redness, light sensitivity, blurred vision, painful genital blisters or difficulty passing urine. If your child cannot pass urine, go to A&E immediately. Call 999 if your child has severe breathing difficulty, cannot swallow safely, develops blue or grey lips or skin, becomes unusually floppy, collapses, or is difficult to wake.<\/p>\n\n\n\n

How a Dermatologist Assesses Your Child<\/strong><\/h2>\n\n\n\n
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During your child’s appointment, the dermatologist will ask about when the blisters started, how they have changed, and whether your child has experienced itching, pain, fever, infections, or any recent medicines. You should also mention any symptoms affecting the mouth, eyes, nose, throat, or genital area, as these details can help with diagnosis.<\/p>\n\n\n\n

Your child’s skin may be examined carefully to look at the appearance, pattern, and location of the blisters and any related changes. If the cause is unclear or symptoms continue, seeking advice from a paediatric dermatologist can help your child receive an accurate diagnosis and appropriate treatment.<\/p>\n\n\n\n

Why Two Skin Biopsies May Be Needed<\/strong><\/h2>\n\n\n\n

If your child\u2019s dermatologist suspects an autoimmune blistering condition, they may recommend a skin biopsy to confirm the diagnosis. Two small samples may be needed. One may be taken from the edge of a fresh blister for routine examination under a microscope, while another is usually taken from nearby, normal-looking skin for direct immunofluorescence testing.<\/p>\n\n\n\n

A skin biopsy is usually carried out after the area has been numbed with local anaesthetic. Depending on your child\u2019s age, anxiety, the biopsy location and whether another procedure is planned, sedation or a general anaesthetic may occasionally be considered. Your healthcare team will explain the most appropriate option and how to care for the biopsy site afterwards.<\/p>\n\n\n\n

Blood Tests and Other Investigations<\/strong><\/h2>\n\n\n\n

If your child has an autoimmune blistering condition, your healthcare professional may recommend blood tests or other investigations to better understand the diagnosis. These tests can provide useful information about specific antibodies, overall health, and whether any additional support or monitoring is needed before treatment begins.<\/p>\n\n\n\n

You should know that blood test results are considered alongside your child’s symptoms, examination findings, and biopsy results. The investigations your child needs will depend on their individual symptoms, including whether the skin, eyes, mouth, or other areas are affected.<\/p>\n\n\n\n

Treating Linear IgA Disease<\/strong><\/h2>\n\n\n\n

Before dapsone is started, your child will usually need a G6PD test and baseline blood tests, including a full blood count and liver-function tests. Regular blood monitoring is required during treatment because dapsone can cause haemolysis, changes in the blood\u2019s ability to carry oxygen, liver problems and, rarely, suppression of blood-cell production. Your child\u2019s specialist will provide the exact monitoring schedule.<\/p>\n\n\n\n

Seek urgent same-day medical advice if your child develops new or worsening breathlessness, marked tiredness, pale skin, dark urine, yellowing of the skin or eyes, fever, mouth ulcers, a sore throat, unexplained bruising or a new widespread rash while taking dapsone. If a new rash is accompanied by fever, facial swelling or swollen glands, stop giving dapsone and obtain urgent medical advice. Call 999 if your child has severe breathing difficulty, develops blue or grey lips or skin, collapses, becomes unusually floppy or is difficult to wake.<\/p>\n\n\n\n

UK Guidance Note<\/strong><\/p>\n\n\n\n

Because autoimmune blistering diseases in children are uncommon, treatment is usually managed by specialist dermatology teams, often involving paediatric dermatologists and other specialists when areas such as the eyes or mouth are affected.<\/p>\n\n\n\n

Treating Bullous Pemphigoid<\/strong><\/h2>\n\n\n\n
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If your child has bullous pemphigoid, the treatment approach will depend on how widespread the blisters are, how severe the symptoms are, and whether areas such as the mouth are affected. The aim of treatment is to reduce inflammation, control blister formation, and help your child\u2019s skin heal.<\/p>\n\n\n\n