IgA pemphigus is a rare autoimmune skin disease that causes itchy blisters or pus-filled bumps on the skin. The early symptoms of IgA pemphigus often affect the trunk, underarms, or skin folds, and they can come and go over time. It usually affects adults, especially in middle age, but the pattern can vary. Not everyone will have the same experience. IgA pemphigus is usually chronic rather than life-threatening, and treatment often includes dapsone, steroid creams or tablets, and sometimes other medicines that calm the immune system.
How many people live with Iga pemphigus?
IgA pemphigus is thought to be extremely rare, and Orphanet lists it as affecting fewer than 1 in 1 million people; that suggests fewer than about 8,100 people worldwide (Orphanet, 2024). Using that same rate, fewer than about 340 people may be living with it in the United States (Orphanet, 2024), although these are rough estimates rather than direct counts.
Overview
Iga pemphigusSymptoms
IgA pemphigus often causes itchy, fragile blisters or pus-filled bumps that can break easily and form crusty sores. Many living with IgA pemphigus notice these changes in skin folds, on the trunk, or near the scalp.
Outlook and prognosis
IgA pemphigus often follows a long-term relapsing course, with flares of itchy, fragile blisters or pustules that can come and go. With ongoing treatment, many people with IgA pemphigus can keep symptoms controlled and avoid serious complications.
Causes and risk factors
IgA pemphigus happens when the immune system mistakenly attacks proteins that help skin cells stick together. Risk may be higher in people with certain immune system tendencies, rare blood disorders, or sometimes after medicines. It is not caused by lifestyle.
Genetic influences
Genetics do not seem to play a major role in IgA pemphigus. Some immune-related genetic variations may slightly affect risk, but most cases are not clearly inherited and usually happen sporadically.
Diagnosis
IgA pemphigus is usually diagnosed by a skin exam and a small skin biopsy. The diagnosis of IgA pemphigus is confirmed with lab tests on the biopsy, often including special antibody staining and sometimes blood tests.
Treatment and drugs
Treatment for IgA pemphigus often centers on dapsone, a medicine that can calm the overactive immune response and ease new blistering. Some people with IgA pemphigus also need steroid creams, steroid tablets, or other immune-lowering medicines.
Symptoms
IgA pemphigus usually shows up as clusters of fragile blisters or pus-filled bumps on reddened skin, often with itching, burning, or tenderness. Many living with IgA pemphigus notice that it affects comfort more than general health, but the rash can still make sleep, exercise, and getting dressed harder. Symptoms vary from person to person and can change over time.
Itching is often one of the most bothersome symptoms, and some areas may also sting or burn. Day to day, it can feel like the skin keeps demanding your attention.
Small blisters or pus-filled bumps can appear suddenly and may break easily. Early symptoms of IgA pemphigus can look like a stubborn rash with tiny blisters that keep coming back.
The skin underneath is often red, inflamed, and tender. Some may find that rubbing from clothing or sweating makes these areas feel worse.
When blisters open, they can leave shallow raw areas that ooze, crust, or feel sore. This can make showering, toweling off, or bending certain body parts uncomfortable.
How people usually first notice Iga pemphigus?
People usually first notice IgA pemphigus when a stubborn rash suddenly appears as small blisters or pus-filled bumps on the skin, often in the armpits, groin, trunk, or near skin folds, and the spots may itch or burn more than they hurt. One of the first signs of IgA pemphigus is that these bumps can join into ring-shaped or crusted patches and keep coming back instead of healing like a typical infection or heat rash. Many living with IgA pemphigus first realize something is wrong when the rash spreads over days to weeks or does not improve with usual creams or antibiotics, prompting a closer skin evaluation.
Types of Iga pemphigus
IgA pemphigus can look a bit different from one person to the next, even though it usually causes itchy or burning blisters or pus-filled bumps on the skin. Symptoms don’t always look the same for everyone. In practice, doctors usually describe 2 main types of IgA pemphigus based on where the inflammation sits in the outer skin layer, and that can affect how the rash appears.
SPD type
This type often causes small, fragile blisters or pustules just under the top layer of skin, often in rings or clusters. Many living with this form notice itchy or mildly sore spots on the trunk or in skin folds, and the blisters may break easily and leave crusted areas.
IEN type
This type tends to cause deeper pustules within the outer skin layer, which can make the rash look more inflamed or patchy. People with this variant of IgA pemphigus may have broader areas of red, irritated skin, and some may find the itching or burning feels more noticeable.
Can I slow down the onset of symptoms?
No, there is no proven way to meaningfully delay or prevent the first symptoms of IgA pemphigus, because it is a rare immune-related skin disease and research has not found lifestyle changes that clearly push back when it begins. Healthy habits like not smoking, sleeping well, and managing stress are still good for overall health, but they have not been shown to stop this condition from starting, and they are different from preventing the disease itself. There are no routine screening tests or preventive medicines for people without symptoms, but getting checked early if a new itchy, blistering rash appears can help you start treatment sooner and may make day-to-day symptoms easier to manage.
What genetics can tell you about symptoms
For people living with IgA pemphigus, genetics does not usually give a clear forecast of which symptoms will happen or how severe they will be, because this is mainly an autoimmune condition that is not typically passed down in families. Some inherited differences in immune system genes may slightly affect a person’s tendency to develop autoimmune skin disease, but no specific genetic change is used in routine care to predict when IgA pemphigus will start, whether it will cause more itchy blisters or pustules, or how extensive it will become. In practice, symptoms vary more by the form of the disease and the individual’s immune response than by any known single gene pattern.
Causes and risk factors
In IgA pemphigus, the immune system makes IgA antibodies that attack proteins that help skin cells stay attached. The exact trigger is often unclear, but some cases are linked to blood disorders that produce abnormal IgA or to medicines such as vancomycin. Researchers are still learning how these pieces fit together. Family history is not a common driver, and IgA pemphigus is usually not inherited, though genes that affect immune responses may play a small part. No clear lifestyle causes are known, but risk factors for IgA pemphigus may be higher in people with other immune or blood conditions.
What are the most common causes or risk factors?
IgA pemphigus is a rare skin disease that happens when the body's defense system mistakenly attacks the links between skin cells, but in most people the exact trigger is not known. Unlike some conditions, it usually is not strongly tied to family history or a clear inherited gene change. It is seen more often in adults, especially in middle age, and it can be linked with some blood-related problems, such as an abnormal immune protein in the blood and, less often, certain blood cancers or other immune system diseases.
Environmental and biological risk factors
IgA pemphigus is a rare skin disease, and its triggers are not always easy to pin down. When people ask about the causes of IgA pemphigus, the answer is usually a mix of body-based factors and, sometimes, outside triggers. Doctors often group risks into internal (biological) and external (environmental).
IgA pemphigus is usually diagnosed in adults, often in middle age or later. Some studies suggest it may be slightly more common in women, although the disease is too rare for this pattern to be exact.
People with IgA pemphigus sometimes have other immune-related conditions. This suggests that an immune system already prone to misfiring may raise the chance of developing it.
Some people with IgA pemphigus have unusual IgA proteins in the blood or an underlying blood disorder. Because of this link, doctors may sometimes check for a hidden blood-related condition, especially when symptoms begin later in life.
Rare cases of IgA pemphigus have been linked to medications, most often the antibiotic vancomycin. If a new blistering or pustular rash appears soon after starting a drug, doctors may consider that medicine as a possible trigger.
Genetic risk factors
IgA pemphigus does not usually run strongly in families, and most people who develop it have no known inherited cause. Many people want to know whether IgA pemphigus is hereditary, and in most cases the answer is no in the usual parent-to-child sense. Some risk factors are inherited through our genes, but for IgA pemphigus no single gene change has been confirmed as the main cause. Because this disease is rare, doctors are still learning which immune-system genes may slightly raise risk.
No single gene: No single gene has been shown to cause IgA pemphigus in most people. A clear inherited pattern has not been found.
Family history: Most people with IgA pemphigus do not have a close relative with the same disease. Family clusters are very uncommon, so the risk to relatives is thought to be low.
Immune genes: Genes that help control the immune system, including HLA genes, may play a small part in who is more likely to develop autoimmune skin disease. For IgA pemphigus, these links are still being studied and are not strong enough to guide routine risk prediction.
Lifestyle risk factors
IgA pemphigus is not primarily driven by lifestyle in the way some metabolic diseases are, but certain habits can worsen skin inflammation, aggravate symptoms, or make treatment harder. When people ask about lifestyle risk factors for IgA pemphigus, the most helpful focus is on factors that can trigger flares, delay healing, or increase complications. Daily routines around smoking, alcohol, skin care, weight, and treatment adherence may all influence how active the disease feels over time.
Smoking can promote systemic inflammation and may make autoimmune skin disease harder to control. It can also impair skin healing and increase the risk of infection in damaged skin.
Heavy alcohol intake can worsen general inflammation and may interfere with sleep, hydration, and recovery during flares. It can also complicate the safe use of some medicines used to manage IgA pemphigus, especially if liver monitoring is needed.
Tight clothing, scratching, harsh soaps, and aggressive skin care can irritate fragile skin and worsen discomfort. Reducing friction and using gentle cleansing may help limit breakdown of affected areas.
Higher body weight can increase sweating and skin-to-skin friction, especially in body folds where lesions may become more uncomfortable. Obesity is also linked with chronic inflammation and can make mobility and wound care more difficult.
Risk prevention
IgA pemphigus cannot usually be fully prevented because it is a rare autoimmune skin condition, and there is no proven way to stop it from starting. For many living with IgA pemphigus, prevention is mostly about lowering the chance of flare-ups, skin injury, and infection. Prevention works best when combined with regular check-ups. If you notice new blisters, pus-filled bumps, or other early symptoms of IgA pemphigus, early treatment may help limit complications.
Regular visits help catch worsening skin changes early and allow treatment to be adjusted before a flare becomes more severe. This can lower the risk of infection, pain, and wider skin involvement.
Taking prescribed treatment as directed is one of the best ways to reduce IgA pemphigus flare-ups. Stopping medicines suddenly or skipping doses can make the condition harder to control.
Mild cleansers, fragrance-free moisturizers, and avoiding harsh scrubbing can help protect already fragile skin. This may reduce irritation, cracking, and secondary infection.
Open or inflamed areas should be kept clean and watched for spreading redness, warmth, swelling, or drainage. Fast treatment of possible skin infection can prevent IgA pemphigus from becoming more complicated.
Can you prevent Iga pemphigus?
There is no known way to prevent IgA pemphigus in most people, because it happens when the body's defense system mistakenly attacks the skin and the exact cause is often unclear. In the small number of cases linked to a medicine, avoiding that trigger with your doctor’s help may lower the chance of it coming back, but this does not prevent most cases.
Transmission
If you are living with IgA pemphigus, one common worry is whether the rash or blisters can spread to family members. IgA pemphigus is not infectious, so it does not pass from person to person through touching, kissing, sharing towels, sex, blood, or the air.
Instead, IgA pemphigus happens because the immune system mistakenly attacks parts of the skin. It is also not usually inherited, so in most cases there is no parent-to-child genetic transmission of IgA pemphigus.
When to test your genes
For IgA pemphigus, genetic testing is not usually helpful for early detection or day-to-day treatment decisions. Care is guided mainly by your symptoms, skin biopsy, and antibody testing, though a specialist may rarely discuss genetics if your history suggests another inherited blistering condition.
Diagnosis
IgA pemphigus is usually diagnosed when ongoing skin symptoms, such as itchy or burning blisters and pustules, lead to a closer medical evaluation. Because it can look like other blistering or pus-filled skin conditions, doctors often combine the skin exam with lab testing rather than relying on appearance alone. It’s natural to worry when symptoms don’t have a clear explanation. In practice, the diagnosis of IgA pemphigus is confirmed by looking at a small skin sample and checking for a specific immune pattern.
Doctors usually begin with a careful look at the rash, including where the blisters or pustules appear and whether they break easily. This helps them judge whether IgA pemphigus is likely or whether another skin condition may be a better fit.
A detailed family and health history can help place the skin changes in context. Your clinician may ask when the rash started, whether it comes and goes, and what treatments or medicines you have already tried.
A small piece of affected skin is removed and examined under a microscope. This can show changes in the outer skin layers that support how IgA pemphigus is diagnosed and help rule out infections or other blistering diseases.
Doctors may perform a second biopsy from skin next to a fresh lesion for a test called direct immunofluorescence. This looks for IgA deposits in the skin, which are a key clue for confirming IgA pemphigus.
How is Iga pemphigus diagnosed?
IgA pemphigus is usually diagnosed by a skin specialist based on how the rash, blisters, or pus-filled spots look and by taking a small skin sample, called a biopsy. That sample is checked under a microscope and with a special lab test that looks for IgA, a type of immune protein, collecting in the upper layers of the skin; blood tests may also help support the diagnosis. Because other blistering skin problems can look similar, doctors usually make the diagnosis by putting together the skin exam, biopsy, and lab results rather than relying on just one test.
Stages of Iga pemphigus
Iga pemphigus does not have defined progression stages. This is because it is usually described by how active the skin disease is at a given time, rather than by a steady step-by-step decline over time. Doctors usually start with a conversation about the early symptoms of Iga pemphigus, such as itchy or tender blisters, pus-filled bumps, or raw areas where skin rubs together. Diagnosis is usually confirmed with a skin exam, a small skin sample for biopsy, and special lab tests that look for antibody deposits, while follow-up focuses on whether treatment is controlling new spots and helping the skin heal.
Outlook and prognosis
The outlook for IgA pemphigus is generally favorable, as it is often a chronic but relatively mild autoimmune blistering disease compared with other forms of pemphigus. Many people achieve good control of skin lesions with treatment such as dapsone, topical or systemic corticosteroids, or other steroid-sparing medicines, although relapses can occur and some patients need long-term therapy. Life expectancy is usually normal, and death from IgA pemphigus itself is considered very rare. Prognosis can be less favorable when the disease is widespread, difficult to control, or linked to an underlying disorder such as a monoclonal gammopathy or other systemic illness. Ongoing dermatology follow-up is important because treatment side effects, secondary skin infection, and associated conditions may have more impact on health than the skin disease itself.
Long-term effects
IgA pemphigus often follows a long-term pattern of flares and quieter periods, rather than going away for good. For many, this means recurring itchy or burning pustules and raw spots that can interfere with sleep, comfort, and confidence in daily life. It’s important to remember that long-term doesn’t always mean progressive, and many people living with IgA pemphigus do not develop deep skin damage or life-threatening complications.
IgA pemphigus commonly comes and goes over time, with outbreaks that may return in the same areas or appear in new ones. Many living with IgA pemphigus notice that the rash can settle for a while and then flare again.
Ongoing itching, burning, tenderness, or irritation can be one of the most persistent long-term effects of IgA pemphigus. On a practical level, this may make clothing, sweating, exercise, or even lying in bed feel uncomfortable during flares.
The blisters and pustules in IgA pemphigus are usually shallow, so they often heal without true scarring. Even so, repeated inflammation can leave temporary dark or light marks and areas of fragile skin that take time to look normal again.
Open or irritated skin can make it easier for bacteria to cause secondary skin infections. This risk tends to be higher during active flares, especially when patches are widespread or repeatedly scratched.
How is it to live with Iga pemphigus?
Living with IgA pemphigus often means coping with repeated flares of itchy, tender blisters or pus-filled bumps, most often on the trunk or in skin folds, and that can make dressing, exercising, sleeping, or even simple skin contact uncomfortable. For many people, the condition is physically draining and emotionally wearing, especially when visible skin changes affect confidence or when treatment requires ongoing check-ins and skin care routines. It is not contagious, so it does not spread to family, friends, or coworkers, but people around you may still be affected by the stress of a chronic illness, the time needed for medical visits, and the day-to-day adjustments that come with unpredictable flares.
Treatment and drugs
IgA pemphigus is usually treated with medicines that calm the immune system and help clear the itchy or painful blisters and pustules on the skin. The main drug is often dapsone, and some people also need steroid creams, steroid tablets, or other immune-suppressing medicines if symptoms are more widespread or do not improve enough. Not every treatment works the same way for every person, so doctors may adjust treatment over time based on how active the rash is and whether side effects show up on blood tests or in day-to-day life. Alongside medical treatment, gentle skin care, avoiding friction on sore areas, and getting prompt help for signs of skin infection can make living with IgA pemphigus easier.
Can you cure Iga pemphigus?
No, IgA pemphigus cannot usually be cured at this time. Treatment can often control the skin sores, itching, and flare-ups, usually with medicines that calm the immune system and reduce skin inflammation. Many people living with IgA pemphigus can feel much better with treatment, but ongoing care is often needed because symptoms can come back.
Non-drug treatment
Living with IgA pemphigus can mean sore, fragile skin that makes showering, getting dressed, or sleeping uncomfortable. Alongside medicines, non-drug therapies can help protect the skin, lower irritation, and make day-to-day life easier. Because flares and body areas involved can vary, care is often tailored to where the rash appears and how severe it is.
Mild cleansing, short lukewarm showers, and regular use of plain moisturizers can help reduce dryness and stinging. Fragrance-free products and soft towels are usually easier on skin that blisters or peels.
Non-stick dressings can protect raw areas, lower friction, and make clothing less painful to wear. Some non-drug options are delivered by specialists, including dressings chosen to absorb fluid without tearing fragile skin.
Heat, sweating, rubbing, and tight clothing can worsen irritation for many people with IgA pemphigus. Loose cotton layers and staying cool may help limit rubbing and reduce the chance of new blisters forming.
Cool compresses and bland emollients can calm itching and burning without further irritating the skin. For many, treatment begins not at the pharmacy, but with small changes like keeping nails short and avoiding scratching during a flare.
Your genes may have an impact on how drugs work for you
For many living with IgA pemphigus, the main day-to-day issue is finding a medicine that calms the skin without causing troublesome side effects, and inherited differences in the body can sometimes change how well that balance works. A well-known example is dapsone, a medicine often used for this condition: some people are born with low levels of an enzyme called G6PD, and in them dapsone can trigger a dangerous breakdown of red blood cells, which is why doctors usually check for this before treatment. Other inherited differences may also affect how strongly someone responds to medicines that quiet the immune system, but for IgA pemphigus this kind of genetic testing is not routine for most treatments.
Pharmacological treatments
Treatment for IgA pemphigus is aimed at calming the immune system, easing itching or burning, and helping the blisters and crusted rash heal. Many living with IgA pemphigus need more than one medicine over time, especially if the skin disease is widespread or keeps coming back. Finding the right medication can be a process of trial, patience, and adjustment.
Dapsone is often the first medicine tried for IgA pemphigus because it can reduce the inflammation that drives pus-filled blisters. Doctors usually monitor blood counts and liver function during treatment, since side effects can include anemia or other blood problems.
Topical corticosteroids such as clobetasol or betamethasone can help calm sore, itchy patches when IgA pemphigus affects smaller areas. They are often used for early symptoms of IgA pemphigus or alongside other drugs when flares break through.
Prednisone or prednisolone may be used when the rash is more extensive, painful, or not controlled with dapsone and creams alone. Because long-term steroid use can cause weight gain, high blood sugar, bone loss, and infection risk, doctors usually try to taper to the lowest effective dose.
Acitretin, a vitamin A related medicine, can help some people with IgA pemphigus, especially when dapsone is not enough or cannot be used. It is not safe during pregnancy, and common side effects include dry lips, dry skin, and changes in liver tests or blood fats.
Genetic influences
Living with recurring itchy blisters or pus-filled bumps can make people with IgA pemphigus wonder why it happened. It’s natural to ask whether family history plays a role. When people ask what causes IgA pemphigus, the best answer is that genes may influence how the immune system behaves, but this condition is not usually passed down in a simple inherited pattern. Most people with IgA pemphigus do not have close relatives with the same disease, so genetics seems to be only one possible contributor rather than the whole explanation. Researchers think some inherited differences in immune-related genes may slightly affect risk, while other triggers in the body or environment may also be involved. Because of that, genetic testing is not usually a routine part of care, although your doctor may still ask about autoimmune conditions in your family.
Is Iga pemphigus genetic?
Genetics do not seem to play a major role in IgA pemphigus. Some immune-related genetic variations may slightly affect risk, but most cases are not clearly inherited and usually happen sporadically.
Having a genetic risk is not necessarily a diagnosis
Changes in genes, called genetic variants, are a normal part of human biology and are common in the general population. Most of these variants do not have a direct effect on health and simply reflect natural human diversity. For many genes, having a variant connected to a condition suggests a possible association rather than a definite diagnosis, especially when several genes and environmental factors are involved. In some cases, though, a single well-understood variant in a specific gene can be enough to confirm a diagnosis.
Pharmacogenetics—how genetics influence drug effects
When people ask how genetics affect treatment for IgA pemphigus, the answer is usually more about medication safety than picking one guaranteed best drug. Treatment is still guided mainly by the pattern and severity of the skin changes and by how well the disease settles over time. One medicine often used for IgA pemphigus is dapsone, and an inherited condition called G6PD deficiency can make it more likely to cause red blood cell breakdown, so doctors may test for that before starting it. If azathioprine is being considered, checking genes that affect how the body breaks down this medicine can help lower the risk of dangerously low blood counts, and in some populations a specific HLA marker is linked to a higher chance of a serious dapsone allergy reaction. Genetics is only one factor, and other medicines, liver health, and the activity of IgA pemphigus still matter a great deal. In everyday care, this usually means blood tests, symptom checks, and dose changes are still needed to find the safest and most effective balance.
Interactions with other conditions
People with IgA pemphigus often deal with skin symptoms that can look a lot like a skin infection, with fragile blisters or small pus-filled spots in the folds of the skin, so it may take time to sort out what is really causing the rash. Another important aspect is how it may link with other diseases. In some people, IgA pemphigus has been associated with immune system disorders or blood conditions that involve an abnormal IgA protein, such as a monoclonal gammopathy, and rarely this can be tied to a blood cancer. Because of that, doctors may sometimes recommend blood tests if the rash is unusual, hard to control, or comes with other warning signs. IgA pemphigus can also be confused with conditions such as eczema, psoriasis, or other blistering diseases, which matters because the treatments are different. The presence of another illness does not always mean IgA pemphigus will be more severe, but it does mean your care team may look more broadly at overall health rather than treating the skin alone.
How genes can cause diseases
Humans have more than 20,000 genes, each carrying out one or a few specific functions in the body. One gene instructs the body to digest lactose from milk, another tells the body how to build strong bones and another prevents the body's cells from beginning to multiply uncontrollably and developing into cancer. As all of these genes combined are the building instructions for our body, a defect in one of these genes can have severe health consequences.
Through decades of genetic research, we know the genetic code of any healthy/functional human gene. We have also identified that in certain positions on a gene, some individuals may have a different genetic letter from the one you have. We call these hotspots "Genetic Variations" or "Variants" in short. In many cases, studies have been able to show that having the genetic letter "G" in the position makes you healthy, but having the letter "A" in the same position disrupts the gene function and causes a disease. Genopedia allows you to view these variants in genes and summarizes all that we know from scientific research, which genetic letters (Genotype) have good or bad consequences on your health or on your traits.
What other conditions can cause similar symptoms to Iga pemphigus?
Because IgA pemphigus can cause itchy blisters or small pus-filled bumps, it is most often confused with pustular psoriasis, skin infections such as impetigo, and other blistering skin diseases like pemphigus foliaceus or bullous pemphigoid. Doctors may also think about dermatitis herpetiformis, which is an itchy blistering rash linked to gluten sensitivity, especially if the spots appear in clusters. A close skin exam and lab testing are often needed to tell these conditions apart.
History
For many people living with IgA pemphigus, the illness can look at first like a stubborn rash that will not settle down. Red patches, fragile blisters, or small pus-filled bumps may come and go, often causing itching or burning, and early on they were often mistaken for other skin conditions. Because of that overlap, IgA pemphigus was recognized only gradually as doctors compared skin symptoms, biopsy results, and the way people responded to treatment.
IgA pemphigus began to take clearer shape in modern dermatology in the late 20th century, when specialists studying unusual blistering disorders noticed that some people did not fit the better-known forms of pemphigus. Initially understood only through symptoms, later it became clear that this condition involved a different type of immune protein, called IgA, attacking structures in the skin. That finding helped separate IgA pemphigus from related disorders and explain why the rash can look a little different from one person to another.
As medical science evolved, doctors also recognized that IgA pemphigus is not exactly the same in every case. Under the microscope, some cases show one pattern and others another, which is why medical classifications have shifted over time. Not every early description was complete, yet together they built the foundation of today’s knowledge, and that is one reason the history of IgA pemphigus can seem a bit complicated in older medical papers.
In recent decades, better skin testing and a clearer understanding of autoimmune disease have made diagnosis more accurate. This has helped clinicians distinguish IgA pemphigus from infections, eczema-like rashes, and other blistering illnesses, especially when the early symptoms of IgA pemphigus are mild or patchy. Even though it remains uncommon, awareness is stronger now than it once was, which means many living with IgA pemphigus can reach the right diagnosis and treatment plan sooner.