Hailey-Hailey Disease: Symptoms, Triggers, and Treatment

Recurring painful, raw patches in the armpits, groin, under the breasts, or other skin folds can make walking, exercise, work, and sleep uncomfortable. Hailey-Hailey disease is a rare inherited skin condition in which the outer skin layer is more fragile than usual. Heat, sweat, and friction can trigger flares, and damaged areas may become infected.

The disease is sometimes called benign familial pemphigus, but it is not an autoimmune form of pemphigus and is not contagious. This guide explains the genetic cause, typical symptoms, diagnosis, ways to protect vulnerable skin, and treatment options. A dermatologist can help distinguish it from common infections and other rashes in skin folds.

At a glance

What is Hailey-Hailey disease?

Hailey-Hailey disease is a rare genetic condition that weakens how cells in the outer layer of skin attach to one another. It is usually linked to a pathogenic variant in one copy of ATP2C1. The gene helps cells make hSPCA1, a pump involved in storing calcium. Calcium supports the adhesion and barrier functions of skin cells. When that system is disrupted, the epidermis can become fragile and split after ordinary friction or moisture.

The condition usually appears in early adulthood, though it can start earlier or later. It tends to follow a relapsing pattern: inflamed areas may return during hot or humid periods, then partly settle. Many people experience long intervals with fewer symptoms. Severity varies from a few irritated patches to widespread, persistent erosions that interfere with daily activities.

“Benign familial pemphigus” is an older name that can be misleading. Hailey-Hailey disease is not the same as pemphigus vulgaris and is not driven by the same autoimmune antibodies. It also does not spread through touch. If bacteria, fungi, or herpes simplex infect damaged skin, that infection is a complication and should be treated on its own.

Where does the rash appear?

Hailey-Hailey disease most often affects skin folds where warmth, sweat, and skin-on-skin friction collect. Common locations are the armpits, groin, neck, under the breasts, and the crease between the buttocks. Less often, lesions affect other parts of the body or follow a line on one side. Fingernails may show narrow white lengthwise bands, which can be a clue during an examination.

During a flare, the skin can look red, dusky, violet, or brown depending on skin tone and inflammation. Small flaccid blisters may appear, but they often break quickly. Many people notice raw, shiny erosions, cracks, crust, or moist areas instead of intact blisters. The rash can itch, burn, sting, or hurt with movement. Healing areas may leave temporary color changes.

Repeated flares can become exhausting. Odor may occur when skin is macerated or infected; it is not a sign of poor hygiene. Gentle care and a correct diagnosis are more useful than scrubbing or applying many over-the-counter products to a painful fold.

Why do flares happen?

Heat, humidity, sweating, and friction often make symptoms worse. A hot day, exercise, tight clothing, repetitive rubbing, or prolonged moisture can irritate a vulnerable fold. Minor injury, such as scratching, can add to skin breakdown. Individual triggers vary, and not everyone needs to avoid the same activities.

Infection can change the appearance of a flare. Bacteria or fungi may grow in damaged, moist skin, causing increased pain, odor, discharge, or crust. Herpes simplex can infect blistered areas and may produce a sudden, painful eruption of clustered blisters or erosions. Infection is not the underlying inherited disease; a clinician may need to test the area and choose targeted treatment.

Rarely, long-standing lesions can develop squamous cell skin cancer. This is not the usual course, but a new growth, nonhealing ulcer, bleeding spot, or area that changes in a way unlike previous flares should be examined.

How is Hailey-Hailey disease diagnosed?

A clinician asks when the rash began, how often it returns, whether heat or friction makes it worse, and whether relatives have had similar symptoms. They examine the affected folds and may check the nails. Photos from both an active flare and a quieter period can help if the appointment happens after the rash improves.

Other conditions can look similar, including candidal intertrigo, tinea cruris, impetigo, inverse psoriasis, contact dermatitis, and other blistering diseases. The clinician may take a swab or scraping when bacterial or fungal infection is possible. If the appearance is uncertain, a skin biopsy can show the characteristic separation of epidermal cells. Direct immunofluorescence is usually negative, which helps distinguish Hailey-Hailey from some autoimmune blistering diseases.

Genetic testing may be discussed if the diagnosis is unclear or a family wants more information about inheritance. It is not necessary for every person with a typical presentation. The fact that no relative is known to have the condition does not completely rule it out; a new variant or an unrecognized mild case can occur.

Daily care for fragile folds

Small changes can lower irritation even though they do not remove the genetic cause. Choose soft, loose clothing that does not rub, and use breathable fabrics when possible. After sweating, change out of damp clothing and gently rinse or pat the area dry. Avoid rubbing the fold with a towel; pressing softly can reduce friction. Some people find that a fan or a cooler room helps during hot weather.

Wash with lukewarm water and a mild, fragrance-free cleanser if tolerated. A clinician may recommend a barrier ointment or absorbent dressing to reduce skin-on-skin friction. Avoid tight adhesive coverings over fragile skin unless a clinician suggests them, because removal can injure the surface. Keep a short record of temperature, activity, clothing friction, and symptoms to identify patterns that actually apply to you.

Do not scrub, exfoliate, or repeatedly apply alcohol, peroxide, or harsh antiseptics to raw skin. These can sting and worsen irritation. If a product burns or causes swelling, rinse it off and ask a clinician before trying another. Practical skin care should make daily life easier, not create a complicated routine.

Treatment options

There is no established cure, so treatment aims to shorten flares, reduce pain, control sweating when relevant, and prevent or treat infection. Evidence for many treatments comes from small studies and case reports, so response varies. A dermatologist may start with local care and add other options if the disease is persistent or extensive.

Topical medicines

A short course of topical corticosteroid may reduce inflammation during an active flare. A topical calcineurin inhibitor can be considered for selected sensitive areas or recurring disease. These prescription medicines should be used as directed because duration, skin location, and infection risk matter. Long-term unsupervised steroid use can thin skin and complicate some infections.

Antibiotic or antifungal treatment is used when a bacterial or fungal infection is suspected or confirmed—not simply because a fold is red. Repeated or prolonged antibiotic use can contribute to resistance, so the clinician may take a swab and choose a targeted course. If herpes simplex is suspected, antiviral treatment may be needed.

Reducing sweat and friction

When sweating is a major trigger, a clinician may suggest an antiperspirant or other sweat-control plan. For persistent disease in the armpits or groin, botulinum toxin injections may reduce sweat and, for some people, lessen flares. This procedure requires a clinician and has costs and possible side effects; results vary and may wear off.

More persistent or severe disease

Systemic medicines, including antibiotics, retinoids, immunomodulators, or biologic medicines, may be considered for severe disease, but the evidence is limited and many uses are off-label. Laser procedures, photodynamic therapy, or surgery may be discussed for selected resistant areas. These approaches are not routine for every patient and should be weighed against wound-healing risks and the possibility of recurrence.

Before starting any treatment, ask what it is intended to improve, how long to try it, whether infection should be ruled out, and what side effects need attention. A clinician can explain which options have stronger experience behind them and which are supported mainly by case reports. Avoid internet regimens or medicines prescribed for another person’s rash.

Living with a recurrent condition

Because symptoms return, it can be useful to plan for predictable stressors such as hot weather, exercise, travel, or long periods in tight clothing. Carrying a gentle cleanser, spare clothing, and a clinician-approved barrier product may make a flare easier to manage. If a certain sport or activity reliably causes irritation, ask about clothing or timing changes before giving it up.

Pain, odor, and visible erosions can affect confidence and relationships. Let the clinician know if the condition is interfering with work, sleep, intimacy, or mood. The care plan may be adjusted to focus on the areas that cause the greatest burden. Support from a dermatologist, primary-care clinician, or patient community can help reduce the sense of managing it alone.

When to seek medical care

Arrange a dermatology visit if a recurring rash in folds keeps cracking, blistering, or returning, especially if it is painful or not responding to basic care. A biopsy or infection test may prevent repeated treatment for the wrong condition. A new lesion that stays open, grows, bleeds, or looks different from usual flares should also be checked.

Seek prompt medical attention if pain or redness is rapidly worsening, the area develops pus or spreading crusts, fever appears, or there are many new painful blisters. These changes may indicate bacterial or herpes infection. People with severe symptoms or feeling acutely unwell should use urgent medical services.

Frequently asked questions

References and further reading

• DermNet: Hailey-Hailey disease (benign familial pemphigus)
• MedlinePlus Genetics: Hailey-Hailey disease
• MedlinePlus Genetics: ATP2C1 gene
• Hailey-Hailey disease: clinical, diagnostic, and therapeutic update (2024 review)
• Hailey-Hailey disease: an updated review with a focus on therapeutic mechanisms
• Treatment algorithm suggestion for Hailey-Hailey disease

Medical information disclaimer

This article is for general education and is not a substitute for personalized medical advice, diagnosis, or treatment. Recurrent painful skin-fold rashes have several possible causes. A qualified healthcare professional can examine the skin, test for infection when needed, and choose appropriate care. Do not start prescription medicines based only on this article.