Hailey-Hailey disease is a rare inherited skin condition that causes repeated painful areas of rash and skin breakdown, most often in skin folds such as the neck, armpits, groin, and under the breasts. Many living with Hailey-Hailey disease first notice flares in adolescence or adulthood, and heat, sweating, friction, and skin infections can make it worse. The early signs of Hailey-Hailey disease can include itching, burning, and raw cracked patches that may ooze or smell unpleasant. It is usually a lifelong condition with periods that improve and periods that flare, but it does not usually affect life expectancy. Treatment focuses on controlling flares and preventing infection, often with gentle skin care, reducing friction, and medicines such as creams or antibiotics when needed.
How many people live with Hailey-hailey disease?
Direct counts are not available, but a widely used estimate is that Hailey-Hailey disease affects about 1 in 50,000 people. Using current population totals, that suggests roughly 160,000 people worldwide (NORD, 2024; United Nations, 2024) and about 6,800 people in the United States (NORD, 2024; U.S. Census Bureau, 2024).
Overview
Hailey-hailey diseaseSymptoms
Hailey-Hailey disease usually causes painful, itchy blisters, cracks, and raw patches where skin rubs, such as the neck, armpits, groin, or under the breasts. Early symptoms of Hailey-Hailey disease often flare with heat, sweating, or friction.
Outlook and prognosis
Hailey-hailey disease usually lasts lifelong, but symptoms often come and go, with flares in skin folds during heat, sweat, or friction. Many people have periods of calmer skin, and treatment plus trigger avoidance can make day-to-day life much more manageable.
Causes and risk factors
Hailey-hailey disease is caused by a change in the ATP2C1 gene, usually inherited from a parent, though some cases start new in the family. Heat, sweating, friction, skin injury, and infections can trigger flare-ups or make symptoms worse.
Genetic influences
Genetics are central to Hailey-hailey disease. It is usually caused by a change in the ATP2C1 gene, often inherited from one parent, though some people develop it for the first time in their family.
Diagnosis
Hailey-hailey disease is usually diagnosed from its typical skin changes and where the rash appears. Doctors may confirm the diagnosis of Hailey-hailey disease with a skin biopsy, and sometimes with genetic tests.
Treatment and drugs
Hailey-hailey disease is usually managed by calming flares, protecting the skin, and treating infection when needed. Many living with Hailey-hailey disease use medicated creams, short courses of antibiotics, or anti-inflammatory medicines. Some also benefit from laser or surgical treatment for stubborn areas.
Symptoms
Hailey-hailey disease often shows up as repeated sore skin in places where skin rubs and traps moisture, such as the armpits, groin, under the breasts, or between skin folds. The early features of Hailey-hailey disease can look like a stubborn rash that keeps coming back after sweating, exercise, or hot weather. Many living with Hailey-hailey disease find that everyday things like walking, shaving, or wearing tight clothing can irritate the area. Features vary from person to person and can change over time.
The most common sign is a red, irritated rash in skin folds where friction and sweat build up. It often affects the armpits, groin, neck, under the breasts, or around the buttocks.
Small blisters or fragile bumps can break easily and leave shallow, peeled areas behind. The skin may look wet, shiny, or rubbed raw rather than forming large intact blisters.
Many people with Hailey-hailey disease feel itching, stinging, or a burning sensation in affected areas. Day to day, it can feel like skin that is constantly chafed and hard to ignore.
The skin can split into painful cracks, especially where there is repeated movement or rubbing. For many, this can make walking, lifting an arm, or other simple movements uncomfortable.
How people usually first notice Hailey-hailey disease?
Many people first notice Hailey-Hailey disease when a stubborn, painful rash keeps coming back in areas where skin rubs together, such as the armpits, groin, under the breasts, or the neck. The first signs of Hailey-Hailey disease are often red, raw-looking patches or fragile blisters that break easily, sometimes with burning, itching, cracking, or a strong odor, especially during heat, sweating, or friction. Because it can look like eczema, a fungal infection, or simple skin irritation at first, people with Hailey-Hailey disease are often first recognized only after these flare-ups keep returning in the same body folds.
Types of Hailey-hailey disease
No distinct types of Hailey-hailey disease are widely recognized.
Can I slow down the onset of symptoms?
No, there is no proven way to meaningfully delay when Hailey-Hailey disease first begins, because it is an inherited skin condition. What may help is lowering the chance of flare-ups or making them milder by reducing heat, sweating, friction, and skin injury, keeping skin folds as dry as possible, managing weight if needed, and getting skin infections treated early, but that is not the same as preventing the condition. There is no well-established preventive medicine to stop onset, yet early care from a skin doctor can still make a real difference in comfort and day-to-day control once symptoms appear.
What genetics can tell you about symptoms
Genetics can confirm that Hailey-Hailey disease is caused by changes in the ATP2C1 gene, but they usually cannot predict exactly which symptoms someone will have day to day. Even within the same family, people with the same gene change can have very different patterns, from mild, occasional sore or cracked skin in skin folds to more frequent flares with pain, itching, or infection. In general, genetics helps explain the cause more than the timing or severity, since symptoms are also shaped by triggers such as heat, sweating, friction, and skin irritation.
Causes and risk factors
For many, Hailey-hailey disease tends to flare during everyday things like sweating, exercise, or skin rubbing in the armpits or groin. Hailey-hailey disease is caused by a change in the ATP2C1 gene, which makes the outer layer of skin more fragile. The gene change is often inherited from a parent, but it can also happen for the first time in a family. Risk can vary widely from person to person. Heat, friction, sweating, skin infections, and extra body weight can bring on or worsen the early symptoms of Hailey-hailey disease.
What are the most common causes or risk factors?
Hailey-Hailey disease is usually caused by an inherited change in a gene that helps skin cells hold together, so it often runs in families, and a parent with the condition has a 1 in 2 chance of passing it on. The biggest risk factor is having a close family member with it, although some people develop it even without a known family history because the gene change starts for the first time in them. Heat, sweating, rubbing in skin folds, and skin infections do not cause the condition, but they commonly trigger or worsen flare-ups.
Environmental and biological risk factors
For Hailey-Hailey disease, the usual idea of risk factors is a little different from conditions that develop from environment, infection, or aging. Doctors often group risks into internal (biological) and external (environmental). At this point, there are no well-established environmental or non-genetic biological factors that clearly make Hailey-Hailey disease occur, so information about risk factors for Hailey-Hailey disease is limited.
Hailey-Hailey disease has not been clearly linked to common outside exposures, routine infections, or typical pregnancy-related factors. Current evidence suggests there are no reliable environmental or non-genetic biological risk factors that consistently predict who will have it.
Genetic risk factors
For most people, the genetic causes of Hailey-Hailey disease involve a change in a gene called ATP2C1, which helps skin cells stay connected. Most cases follow a dominant inheritance pattern, so one changed copy can be enough to raise risk. Carrying a genetic change doesn’t guarantee the condition will appear, and relatives with the same change can still be affected very differently.
ATP2C1 gene: Most people with Hailey-Hailey disease have a change in the ATP2C1 gene. This gene helps control calcium inside skin cells, which supports the tight links that hold the outer layer of skin together. When the gene does not work properly, those links can break down more easily.
Dominant inheritance: Hailey-Hailey disease is usually passed down in an autosomal dominant pattern. This means inheriting one changed copy of the gene from either parent can be enough to cause the condition. Each child of an affected parent has a 1 in 2, or 50%, chance of inheriting the change.
Family history: Having a parent or other close relative with Hailey-Hailey disease is the strongest inherited risk factor. In some families, several relatives across generations are affected. Even so, the early symptoms of Hailey-Hailey disease can look milder in one family member than another.
New changes: Some people develop Hailey-Hailey disease because the ATP2C1 change happened for the first time in them rather than being inherited. Doctors call this a de novo, or new, genetic change. In these cases, there may be no known family history.
Severity varies: The same genetic change can lead to very different symptoms in different relatives. Some may have frequent painful skin breakdown, while others have milder problems or notice symptoms later. A family history can show risk, but it cannot predict exactly how severe Hailey-Hailey disease will be.
Lifestyle risk factors
Hailey-Hailey disease is an inherited skin disorder, so lifestyle habits do not cause it. However, how lifestyle affects Hailey-Hailey disease can be very important because daily habits often influence friction, sweating, skin breakdown, pain, and secondary infection. The main lifestyle risk factors for Hailey-Hailey disease are the ones that trigger flares or make irritated skin harder to heal.
Hot environments can increase sweating and maceration in skin folds, which often triggers painful Hailey-Hailey flares. Keeping cool may help reduce blistering, cracking, and raw skin in commonly affected areas.
Excess perspiration can soften the skin and worsen friction between nearby surfaces, making erosions more likely. Activities or routines that lead to prolonged sweating can therefore increase symptom severity.
Tight clothing, repetitive rubbing, and skin-on-skin contact in the armpits, groin, under the breasts, or neck can provoke lesions. Reducing chafing may lower the chance of new breakdown and make existing areas less painful.
Higher body weight can deepen skin folds and increase both moisture and friction, which may worsen recurrent outbreaks. Weight reduction does not cure the condition, but it may lessen flare frequency in some people.
Risk prevention
Hailey-hailey disease cannot usually be prevented because it is an inherited skin condition. For many living with Hailey-hailey disease, prevention is really about lowering the chance of flares, skin breakdown, and infection rather than stopping the condition itself. Prevention is about lowering risk, not eliminating it completely. Day to day, this can mean avoiding heat, sweat, and friction that make fragile skin more likely to split or sting.
Heat and sweating often trigger Hailey-hailey disease flares, especially in skin folds. Staying in cool spaces, using fans or air conditioning, and changing out of damp clothes quickly can help reduce irritation.
Rubbing from tight clothes, rough seams, or repeated skin-to-skin contact can worsen fragile areas. Loose, soft, breathable clothing and gentle movement during exercise may help protect the skin.
Harsh soaps, scrubbing, and fragranced products can irritate skin that already breaks down easily. Mild cleansers, careful drying, and regular barrier creams or prescribed creams may lower the risk of painful cracks.
Damp skin in the armpits, groin, under the breasts, or other folds can make Hailey-hailey disease worse. Some may find that absorbent powders, moisture-wicking fabrics, or doctor-guided sweat control help prevent repeated flares.
Can you prevent Hailey-hailey disease?
Hailey-Hailey disease cannot usually be fully prevented because it is an inherited skin condition passed down in families. But many people can lower the chance of flare-ups by avoiding heat, heavy sweating, and skin rubbing, especially in areas where skin touches skin, and by treating irritation early. If this condition runs in your family, genetic counseling may help you understand the chances of passing it on, but it cannot guarantee prevention.
Transmission
Hailey-Hailey disease is not contagious, so it does not spread through skin contact, shared towels, kissing, sex, or being around someone who has it. Instead, the genetic transmission of Hailey-Hailey disease usually happens from parent to child. If one parent is living with Hailey-Hailey disease, each child has a 1 in 2, or 50%, chance of inheriting the changed gene.
Sometimes Hailey-Hailey disease happens because of a new gene change, so someone may develop it even with no family history. Even in the same family, symptoms can vary a lot, with one relative having mild flare-ups and another having more persistent skin problems.
When to test your genes
Consider genetic testing if you have recurrent blistering or raw, cracked rashes in skin folds, especially with a family history or an uncertain diagnosis. Testing can confirm Hailey-Hailey disease and guide family planning and specialist care, but it usually does not predict how severe symptoms will be.
Diagnosis
Hailey-Hailey disease is usually diagnosed when repeated episodes of sore, cracked, or blistered skin show up in areas where skin rubs together, such as the neck, underarms, or groin. Doctors usually begin with the pattern of symptoms, what the rash looks like, and whether flares keep coming back after heat, sweating, or friction. Because it can look like eczema, a yeast infection, or other skin problems, the diagnosis of Hailey-Hailey disease sometimes needs a closer look with skin testing.
A clinician looks closely at where the rash appears and how it behaves over time. Painful raw patches, small blisters, and repeated flares in skin folds can strongly suggest Hailey-Hailey disease.
Your provider will ask when symptoms started, what seems to trigger flares, and whether treatments for other rashes have helped. A detailed family and health history can help because this condition often runs in families.
A small sample of skin may be taken and examined under a microscope. This can show the typical breakdown between skin cells that helps confirm Hailey-Hailey disease and rule out similar conditions.
Swabs or other lab tests may help rule out common conditions such as fungal infection, bacterial infection, or herpes. These tests do not diagnose Hailey-Hailey disease on their own, but they can explain why a flare seems worse or is not healing as expected.
How is Hailey-hailey disease diagnosed?
Hailey-Hailey disease is usually diagnosed by a skin doctor looking at the pattern of repeated blisters, cracks, and sore rash in skin folds such as the armpits, groin, neck, or under the breasts, and by asking about family history and past flare-ups. If the picture is not clear, a small skin sample may be checked under a microscope to confirm the diagnosis and rule out infections or other skin problems that can look similar. A blood or saliva genetic test can sometimes help, especially in unusual cases or when several family members are affected, but it is usually supportive rather than the main way the condition is diagnosed.
Stages of Hailey-hailey disease
Hailey-hailey disease does not have defined progression stages. This is because it usually comes and goes in flares rather than moving through a steady step-by-step decline. Often the process begins when you notice changes in daily life, such as painful cracked skin in the armpits or groin that keeps coming back, and the early symptoms of Hailey-hailey disease can look like a rash, irritation, or a skin infection. Doctors usually diagnose and monitor Hailey-hailey disease by examining the skin, asking about repeated flare-ups and family history, and sometimes taking a small skin sample for testing if the diagnosis is unclear.
Outlook and prognosis
The outlook for people with Hailey-Hailey disease is usually good in terms of life expectancy, because it is a chronic skin disorder that is rarely life-threatening. However, the disease often follows a lifelong relapsing course, with repeated flares that can cause pain, skin breakdown, infection, odor, and major effects on daily activities and mental well-being. Symptoms may worsen with heat, sweating, friction, and secondary bacterial or fungal infections, so long-term management is often needed rather than a permanent cure. Many people can achieve partial control with skin care, trigger avoidance, and medical treatments, but severity varies widely from person to person. Mortality is not generally increased, although uncommon complications such as severe infection can occasionally require urgent treatment. In rare long-standing cases, chronic affected areas have been associated with squamous cell carcinoma, which makes ongoing monitoring important.
Long-term effects
Hailey-Hailey disease often affects daily life in cycles, with skin becoming sore, cracked, and easily irritated in areas where skin rubs together. Over years, many people living with Hailey-Hailey disease have repeated flares and quieter periods rather than one steady pattern. Long-term effects vary widely, and the severity can differ a lot even within the same family. For many, this can mean ongoing skin symptoms, changes in comfort and movement, and a risk of skin infections over time.
Hailey-Hailey disease usually comes and goes over time, with episodes that can last days to weeks and then settle down. Many people continue to have recurring skin breakdown throughout adult life, especially in friction areas such as the armpits, groin, under the breasts, or between skin folds.
Ongoing tenderness, burning, itching, and raw skin can become a long-term problem for people with Hailey-Hailey disease. On some days, simple activities like walking, exercising, or wearing fitted clothing may become uncomfortable.
Broken skin can make it easier for bacteria, fungi, or viruses to grow in affected areas. These infections can worsen pain, odor, oozing, and redness, and sometimes make flares last longer.
Repeated inflammation may lead to thickened, darker, or more fragile skin in places that flare often. Over time, the skin can also develop painful cracks or moist, irritated plaques that keep returning in the same spots.
How is it to live with Hailey-hailey disease?
Living with Hailey-Hailey disease often means dealing with skin that can flare without much warning, especially in areas where friction, heat, and sweat build up, such as the armpits, groin, under the breasts, or neck. For many people, this can mean pain, itching, cracked skin, drainage, and a need to plan around clothing, exercise, work, intimacy, and hot weather, with good days and bad days that can feel unpredictable. The condition is not contagious, but flares can still affect the people around you by changing routines, limiting physical closeness, and adding the daily work of wound care, laundry, and emotional support.
Treatment and drugs
Hailey-Hailey disease is usually treated by calming flares, protecting the skin, and preventing infection, since there is no permanent cure. During a flare, doctors often use prescription creams or ointments to reduce inflammation, and if the skin is cracked, oozing, or painful, they may also treat a bacterial or yeast infection. Many living with Hailey-Hailey disease also benefit from practical steps that lower friction, heat, and sweating, such as wearing loose clothing, keeping skin folds dry, and avoiding irritants that can trigger rubbing and breakdown. In more stubborn cases, treatment may include tablets, medicated washes, botulinum toxin injections to reduce sweating, or procedures done by a skin specialist, because not every treatment works the same way for every person. If you are dealing with frequent flares or wondering about the best treatment for Hailey-Hailey disease, a dermatologist can help build a plan that fits your symptoms and the areas of skin involved.
Can you cure Hailey-hailey disease?
There is no cure for Hailey-Hailey disease at this time. Treatment can often help control flare-ups, ease pain and itching, lower the chance of skin infections, and help sore areas heal, using things like gentle skin care, creams or other medicines, and sometimes procedures for stubborn spots. Many people with Hailey-Hailey disease have times when it gets better and times when it worsens, so care is usually focused on long-term control rather than making it go away completely.
Non-drug treatment
Hailey-Hailey disease often affects everyday comfort in skin folds, where heat, sweat, and rubbing can turn a manageable day into one with painful cracks, oozing, or burning. Beyond prescriptions, supportive therapies can make flares less frequent and help sore skin heal, especially in the underarms, groin, under the breasts, and other areas where skin touches skin. For many, this can mean choosing looser clothes, changing skin-care habits, and using office-based procedures when patches keep coming back. Not every approach works the same way, so care is usually tailored to where the rash appears and how often symptoms return.
Reducing heat, sweating, and friction is a core part of care for many living with Hailey-Hailey disease. Soft breathable clothing, staying cool, and drying skin folds after exercise or hot weather can help limit flares. This can matter if early symptoms of Hailey-Hailey disease show up after sweating or rubbing.
Mild cleansing and careful drying can protect skin that is already fragile. Many people with Hailey-Hailey disease do better with fragrance-free products and simple barrier care to reduce chafing in skin folds.
Wet compresses and non-stick dressings can soothe raw areas and keep broken skin from rubbing against nearby skin. If walking, working, or exercise makes the area sting, these supports can make day-to-day movement easier.
Ongoing wound care helps lower the chance of infection and supports healing when skin cracks or weeps. Some non-drug options are delivered by specialists, including advice on dressings, drainage control, and protecting nearby healthy skin.
Your genes may have an impact on how drugs work for you
For people with Hailey-Hailey disease, the inherited change that causes the condition does not usually help doctors predict which medicines will work best or cause side effects. In day-to-day care, response to common treatments such as skin creams, medicines to calm inflammation, and treatment for skin infection often depends more on how severe the skin flares are, whether germs are involved, and things like heat, sweating, and rubbing. In other words, two people in the same family may have different results with the same treatment, and right now there is no widely used genetic test that reliably guides medicine choice for this condition.
Pharmacological treatments
Treatment for Hailey-Hailey disease is aimed at calming flare-ups, preventing skin infection, and making painful everyday friction easier to manage. Doctors often combine medicines because irritated skin folds can become inflamed and infected at the same time. Not everyone responds to the same medication in the same way. The best treatment for Hailey-Hailey disease flare-ups often depends on how often symptoms return, how much skin is involved, and whether bacteria or yeast are also present.
Creams or ointments such as hydrocortisone, triamcinolone, mometasone, or clobetasol are commonly used to quickly reduce redness, soreness, and inflammation. Stronger steroid products are usually used for short periods because long-term use can thin the skin, especially in the armpits or groin.
Medicines such as clindamycin, mupirocin, or fusidic acid may be used when broken skin is infected or at high risk of infection. They can help dry up oozing areas and lower the number of bacteria that can worsen a flare.
Yeast can make Hailey-Hailey disease more uncomfortable, so creams like clotrimazole, ketoconazole, or miconazole are sometimes added. If yeast involvement is more widespread, doctors may prescribe oral fluconazole or itraconazole.
Tetracycline antibiotics such as doxycycline or minocycline are often used for more extensive flares or repeated infection. Besides treating bacteria, they may also reduce inflammation and help sore areas settle down.
Genetic influences
When painful, cracked rashes keep coming back in skin folds like the armpits or groin, many people with Hailey-Hailey disease start to wonder why it seems to affect several relatives. Hailey-Hailey disease is caused by a change in the ATP2C1 gene, which helps skin cells handle calcium and stay attached to each other, so the outer layers of skin break apart more easily. The condition is usually inherited in an autosomal dominant pattern, which means a parent with the gene change has a 1 in 2, or 50%, chance of passing it on to each child. Even with the same gene change, people can have very different symptoms, so one relative may have mild flares while another has more frequent or more severe skin problems. In some families, the gene change starts for the first time in one person rather than being passed down, but it can still be inherited by future children. Because the genetic cause of Hailey-Hailey disease is well understood, genetic counseling can help families make sense of testing, inheritance, and what the diagnosis may mean for relatives.
Is Hailey-hailey disease genetic?
Genetics are central to Hailey-hailey disease. It is usually caused by a change in the ATP2C1 gene, often inherited from one parent, though some people develop it for the first time in their family.
Having a genetic risk is not necessarily a diagnosis
Across the general population, genetic variants are common and are a normal part of human biology. Most of these variants do not have a direct effect on health and simply reflect natural differences among people. In many genes, having a variant connected to a condition suggests a possible link rather than a certain diagnosis, especially when more than one gene and environmental factors are involved. In some situations, though, a single well-characterized variant in a particular gene is enough to confirm a diagnosis.
Pharmacogenetics—how genetics influence drug effects
Flare-ups of painful, cracked skin in the body folds can make everyday things like walking, exercise, or getting dressed much harder, and treatment for Hailey-Hailey disease is partly shaped by its genetic cause. Hailey-Hailey disease usually happens because of a change in the ATP2C1 gene, which affects how skin cells hold together, so current treatments do not correct the gene change itself. Instead, medicines are used to calm inflammation, lower the risk of infection, reduce friction, and help the skin heal during flares. Not every difference in response is genetic, but even relatives with the same condition can have very different symptom patterns and may need different creams, antibiotics, or other treatments. For many living with Hailey-Hailey disease, doctors choose treatment based more on how severe the disease is, where it appears, and whether bacteria or yeast are making it worse than on a routine drug-gene test. Genetic testing may still help confirm Hailey-Hailey disease and guide family planning, while research continues into more targeted treatments for the future.
Interactions with other conditions
For many living with Hailey-Hailey disease, the biggest issue is that other skin or health problems can make flares harder to control. Skin infections, especially yeast and bacteria in warm body folds, can trigger more pain, oozing, and cracking, and the rash may be mistaken for thrush, eczema, or another skin condition at the same time. Doctors call it a “comorbidity” when two conditions occur together. People with Hailey-Hailey disease may also find that obesity, heavy sweating, or diabetes can make skin rubbing, moisture, and slow healing more of a problem, which can worsen day-to-day symptoms. If someone also has a weakened immune system or needs medicines that affect immunity, secondary infections may become more likely and treatment may need closer follow-up. Because the early symptoms of Hailey-Hailey disease can overlap with common rashes in the groin, underarms, or under the breasts, it is important to let your clinician know if a new diagnosis or infection seems to be happening alongside it.
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 Hailey-hailey disease?
Hailey-Hailey disease is often mistaken for other rashes that affect skin folds, especially yeast or fungal infections, eczema, contact dermatitis, and inverse psoriasis, since all of these can cause red, sore, cracked skin in places like the armpits or groin. If the skin is very raw or blistered, doctors may also consider a bacterial skin infection or another blistering skin condition, because these can look similar at first.
History
People living with Hailey-hailey disease have likely been dealing with the same frustrating pattern for far longer than modern medicine has had a name for it: painful, irritated skin that tends to flare in body folds, then settle, then return again. Before doctors understood it well, these episodes could easily be mistaken for common rashes, infections, or eczema, especially when the skin looked cracked, raw, or weepy during a bad flare.
Hailey-hailey disease entered the medical literature in the 1930s, when two dermatologist brothers, Howard and Hugh Hailey, described the condition in detail and helped separate it from other skin disorders. At first, doctors recognized it mainly by what they could see under the microscope and by its typical pattern on the body, such as the armpits, groin, neck, or under the breasts. For many, this can mean years of symptoms before getting the right diagnosis, especially if early symptoms of Hailey-hailey disease come and go or seem to improve with routine skin treatments.
As medical science evolved, doctors came to understand that Hailey-hailey disease is not contagious and does not happen because of poor hygiene. That shift mattered. It helped move care away from blame and toward practical treatment, including reducing friction, heat, sweating, and skin irritation that can trigger flares.
In more recent decades, research has shown that Hailey-hailey disease has a genetic basis, which helped explain why it can run in families and why symptoms often appear in a repeating pattern over time. Even so, the condition can vary quite a bit from one person to another. Some have mild periods with only occasional outbreaks, while others have more persistent symptoms. This growing understanding has improved diagnosis and care, even though Hailey-hailey disease still remains unfamiliar to many outside dermatology.