Pompholyx is a type of eczema that causes small, intensely itchy blisters on the hands and feet. You might also see it called dyshidrotic eczema or dyshidrosis. The blisters tend to appear in clusters along the sides of your fingers, on your palms, or on the soles of your feet, and they often come back in recurring flare-ups that can last weeks at a time.
What Pompholyx Looks and Feels Like
The hallmark of pompholyx is tiny, fluid-filled blisters that look like small cloudy beads, roughly 1 to 2 millimeters wide (about the size of a pinhead). They most commonly appear between your fingers, across your palms, and on the soles of your feet. Sometimes several blisters merge together into a larger one. The skin around them often feels tight, sore, and intensely itchy.
As the blisters dry out over the course of a few weeks, the skin underneath tends to peel, crack, and become scaly. This cracking phase can be just as uncomfortable as the blisters themselves, especially on your hands where the skin flexes constantly. In more severe flares, blisters can spread to the backs of your hands, the tops of your feet, and beyond the fingers.
Other common symptoms include:
- Excessive sweating around affected areas
- Redness or color changes in the skin
- Pain and soreness that makes gripping or walking uncomfortable
- Deep dryness and cracking once the blisters resolve
What Triggers a Flare-Up
Pompholyx doesn’t have a single cause, but several well-established triggers can set off or worsen flares. Contact with metals, particularly nickel and cobalt, is one of the most common. These metals show up in jewelry, coins, zippers, and even some foods. People who work with chemicals regularly, such as hairdressers and metalworkers, are at higher risk because of frequent exposure to irritants.
Excessive sweating is another major trigger, which partly explains why flares tend to worsen in warm weather. On the feet specifically, friction from tight shoes, shoe materials like leather and rubber, and the glues used in shoe construction can all contribute. Stress, smoking, and UV light exposure are also linked to flare-ups. For many people, flares involve a combination of these factors rather than a single obvious cause.
How It Differs From Similar Conditions
The blistering pattern of pompholyx can look a lot like other skin conditions, which sometimes delays the correct diagnosis. Fungal infections of the hands or feet (tinea) can produce similar-looking blisters, but fungal infections typically affect one hand or foot asymmetrically and may show a characteristic ring-shaped pattern. Allergic contact dermatitis also causes blisters but tends to map directly onto the area that touched the allergen rather than following the symmetrical palm-and-finger pattern typical of pompholyx.
A dermatologist can usually distinguish these conditions through a combination of visual examination, skin scrapings to rule out fungus, and patch testing to check for contact allergies.
First-Line Treatments
The standard approach combines daily moisturizers with anti-inflammatory creams. Because the skin on your palms and soles is much thicker than on other parts of your body, pompholyx typically requires stronger steroid creams than eczema elsewhere. Potent or very potent topical corticosteroids are the usual choice for these thicker skin sites, applied once daily until the flare is under control and then tapered to an “as needed” basis. Most treatment courses for active flares run two to six weeks.
Keeping the skin well moisturized between flares is just as important as treating active blisters. Thick, fragrance-free emollients applied after washing help maintain the skin’s protective barrier and can reduce the frequency of new flares.
Soaks for Weeping Blisters
When blisters are actively oozing, your doctor may recommend potassium permanganate soaks, a mild antiseptic that dries the skin. The process involves dissolving a tablet in four liters of warm water until it turns light pink, then soaking the affected hands or feet for 10 to 15 minutes. Applying petroleum jelly to your nails beforehand prevents staining. After patting the skin dry, you apply any prescribed creams or ointments. Gloves are important when handling the solution, as it stains and can irritate healthy skin.
Options for Severe or Chronic Cases
When pompholyx doesn’t respond to topical steroids, several second-line options exist. UV light therapy can help reduce inflammation in stubborn cases. For severe chronic hand eczema that resists topical treatment, oral medications that regulate the immune system or reduce skin cell turnover may be prescribed. European dermatology guidelines recommend these systemic treatments when topical approaches have failed.
If excessive sweating is a major contributing factor, treatments targeting sweat production, including botulinum toxin injections into the palms or soles, can sometimes reduce flare frequency. A short course of oral corticosteroids (four to six weeks, then tapered) is occasionally used to get severe flares under control before transitioning to milder maintenance therapy.
Recurrence and Long-Term Outlook
Pompholyx is a chronic, relapsing condition for most people. Individual flares typically resolve within a few weeks with treatment, but recurrence is common. In one study that followed 120 patients over three years, even those who initially responded well to treatment frequently experienced new flares within six months. The condition tends to cycle through active and quiet phases rather than resolving permanently.
That said, identifying and avoiding your personal triggers can meaningfully reduce how often flares occur. Patch testing to check for metal allergies, switching to breathable footwear, managing stress, and maintaining a consistent moisturizing routine all help extend the time between episodes.
Signs of Infection to Watch For
Because the blisters break down the skin’s protective barrier, pompholyx carries a risk of secondary bacterial infection. Warning signs include blisters that become significantly more painful, ooze pus, or develop a golden-yellow crust on the surface. Infected pompholyx typically needs a course of antibiotics in addition to the usual eczema treatments. If your blisters change in appearance or the pain suddenly worsens, that shift usually signals infection rather than a normal part of the flare cycle.