Hailey-Hailey disease

Hailey-Hailey disease, also called benign familial pemphigus, is a rare inherited skin condition causing painful blistering and erosions, most commonly in skin folds such as the neck, armpits, and groin. It is caused by a genetic defect affecting how skin cells stick together. It typically presents in early to mid-adulthood.

It is caused by inherited mutations in the ATP2C1 gene, which affects calcium handling within skin cells and disrupts the normal adhesion between them. It is inherited in an autosomal dominant pattern, meaning a single altered gene copy from one parent can cause the condition. Flares are often triggered or worsened by heat, sweating, friction, and infection.

Symptoms include painful, itchy blistering and raw, eroded patches, typically in skin folds, that can smell unpleasant if secondary infection develops. Symptoms often flare in hot weather or with sweating and friction, and improve somewhat in cooler conditions. The condition tends to follow a relapsing and remitting course throughout life.

It is not life-threatening, but it can significantly affect quality of life due to pain, discomfort, and the psychological impact of a chronic, visible skin condition, particularly during flares. Secondary bacterial or fungal infection of the affected skin is a recognised complication that needs prompt treatment. With good long-term management, most people can substantially reduce the frequency and severity of flares.

Yes, it is an autosomal dominant genetic condition, meaning each child of an affected parent has a 50% chance of inheriting the gene change, though severity can vary even within the same family. Genetic testing can confirm the diagnosis. Family history is an important clue that helps guide diagnosis in someone with typical symptoms.

Treatment includes topical steroids and antibiotics or antifungals to manage flares and any secondary infection, along with measures to reduce heat, sweating, and friction in affected areas, such as loose clothing and antiperspirants. More persistent or severe cases may need other treatments such as oral medications, laser therapy, or botulinum toxin injections to reduce sweating. A dermatologist tailors treatment to the severity and pattern of your specific symptoms.

There is no cure for the underlying genetic condition, but with a combination of trigger avoidance and appropriate treatment, many people achieve good long-term control with fewer and milder flares. The condition tends to persist throughout life with a fluctuating course. Ongoing dermatology input helps refine management as needed over time.

Hailey-Hailey disease is specifically an inherited condition affecting skin fold areas with a characteristic relapsing pattern linked to heat and friction, distinguishing it from acquired autoimmune blistering conditions like pemphigus vulgaris, which can affect wider areas of skin and mucous membranes. A skin biopsy and sometimes genetic testing help confirm the diagnosis when it is uncertain. The distinction matters because treatment approaches differ between these conditions.

See a dermatologist if you develop recurrent painful blistering or erosions in skin folds, particularly with a family history of a similar condition, so an accurate diagnosis can be made. A private dermatology assessment can typically be arranged within about one to two weeks. Prompt treatment of flares, including any secondary infection, helps reduce discomfort and prevent complications.