Pompholyx on the Feet: Why Do Small Itchy Blisters Keep Coming Back?
Updated: 3 hours ago
By Dr Lim Tzyy Huei | Consultant Dermatologist, Pantai Hospital Batu Pahat, Johor, Malaysia
Have you ever noticed tiny, itchy, water-filled blisters appearing on the soles of your feet or around your toes?
Sometimes, these blisters disappear after a few weeks, leaving behind dry, peeling or cracked skin. However, the same problem may return repeatedly, especially during hot weather or when your feet sweat excessively.
This condition may be pompholyx, also known as dyshidrotic eczema or vesicular foot eczema.
In Malaysia, patients may describe it as “water blisters on the feet,” “itchy foot blisters,” or “kaki naik gelembung air dan gatal.”
Although pompholyx is not contagious, it can be uncomfortable and frustrating when flare-ups keep recurring.
What Is Pompholyx?
Pompholyx is a type of eczema that causes small, fluid-filled blisters on the skin.
It commonly affects:
The soles of the feet
The sides and undersides of the toes
The arches of the feet
Sometimes, the palms and fingers as well
The blisters are usually small and deeply seated within the skin. They may appear in clusters and cause intense itching or a burning sensation.
After several days or weeks, the blisters gradually dry up, leaving the skin peeling, rough or cracked.
In more severe cases, larger blisters and painful skin fissures may develop, making walking uncomfortable.
Importantly, pompholyx is a form of eczema, not a fungal infection, and it cannot spread from one person to another.
What Causes Pompholyx on the Feet?
The exact cause is not fully understood. Pompholyx involves inflammation of the skin and may be influenced by several contributing factors.
1. Excessive Sweating and Hot Weather
Heat and sweating are common triggers.
In Malaysia’s hot and humid climate, wearing enclosed shoes for prolonged periods may increase sweating and irritation.
Some patients notice that their blisters become worse after a long day of wearing shoes or during particularly hot weather.
However, pompholyx is not simply caused by blocked sweat glands.
2. Skin Irritation
Repeated exposure to moisture, soap, detergents or other irritating substances may damage the skin barrier.
This makes the skin more vulnerable to inflammation and eczema flare-ups.
3. Contact Allergies
Certain materials used in footwear may trigger allergic contact dermatitis, which can resemble or aggravate foot eczema.
Possible allergens include:
Rubber chemicals
Shoe adhesives
Leather treatment chemicals
Certain dyes and metals
If the rash repeatedly develops after wearing particular shoes, further evaluation may be helpful.
4. Stress
Emotional stress may contribute to eczema flare-ups in some individuals.
Although stress is not the only cause, it may make existing symptoms more difficult to control.
5. Fungal Infection
A fungal infection of the feet, commonly called athlete’s foot or kaki berkulat, may sometimes be associated with a blistering eczema-like reaction.
This is particularly important when blisters keep recurring despite treatment.
Identifying and treating an underlying fungal infection may help improve the condition.
Is Pompholyx the Same as Athlete’s Foot?
No. Although both conditions can cause itching, blisters and peeling skin, they require different treatments.
Pompholyx (Eczema) | Athlete’s Foot (Fungal Infection) |
Inflammatory skin condition | Caused by fungal infection |
Small, deeply seated itchy blisters | Scaling, peeling, itching or sometimes blisters |
Often affects both feet | May affect one or both feet |
May flare with heat, sweating or irritation | Favoured by warm, moist environments |
Treated mainly with anti-inflammatory medication | Requires antifungal treatment |
Not contagious | Can spread through infected skin or contaminated surfaces |
These features can overlap, and appearance alone may not reliably distinguish the two conditions.
In uncertain cases, a dermatologist may perform a skin scraping for fungal examination.
This distinction is important because using steroid creams alone on an untreated fungal infection may temporarily reduce redness while allowing the infection to persist or worsen.
How Is Pompholyx Treated ?
Treatment depends on the severity of the eczema, the extent of blistering and how frequently it recurs.
1. Topical Steroid Creams
Topical corticosteroids are commonly used to reduce inflammation, itching and blister formation.
Because the skin on the soles is relatively thick, stronger prescription steroid preparations may sometimes be necessary for a short period.
Once the inflammation improves, treatment is usually reduced or stopped according to the dermatologist’s instructions.
Prolonged unsupervised use of potent steroid creams should be avoided.
If you're concerned about steroid creams, you can read my article Are Steroid Creams Always Harmful?, which explains the benefits, precautions and risks of inappropriate use.
2. Moisturisers and Skin Barrier Repair
Regular moisturising is an important part of treatment, even when the blisters have disappeared.
A fragrance-free moisturising cream or ointment can help:
Reduce dryness and peeling
Improve the skin barrier
Reduce painful cracking
Support recovery after a flare-up
Apply moisturiser after bathing and whenever the skin feels dry.
If the skin is actively weeping or very moist, your dermatologist may recommend a different preparation until the blisters settle.
3. Cool Compresses
During an acute flare, a cool, damp compress may help soothe itching and discomfort.
Avoid applying ice directly to the skin or soaking the feet for prolonged periods, as this may worsen irritation.
4. Treat Excessive Sweating
For patients whose eczema is aggravated by excessive foot sweating, controlling moisture may be beneficial.
Depending on the situation, treatment may include prescription antiperspirants or other treatments for excessive sweating.
These are considered individually, especially when excessive sweating is a persistent contributing factor.
5. Treatment for Recurrent or Severe Pompholyx
Some patients experience frequent flare-ups despite appropriate topical treatment and skin care.
In selected cases, a dermatologist may consider :
Topical calcineurin inhibitors, such as tacrolimus
Phototherapy
Short-term systemic treatment for severe flares
Other systemic anti-inflammatory treatments for difficult-to-control disease
These options are not required for most patients and should be tailored to the diagnosis, severity and treatment response.
Why Does Pompholyx Keep Coming Back?
Pompholyx can be a recurrent skin condition.
Even after the blisters have completely disappeared, the skin may remain sensitive to certain triggers.
Common reasons for recurrence include ongoing exposure to heat and sweating, prolonged use of enclosed footwear, repeated skin irritation, contact allergies or an underlying fungal infection.
Some patients may also have an underlying tendency to develop eczema.
Recurrence does not necessarily mean that the previous treatment was ineffective. It may simply mean that the inflammation has settled while the skin remains susceptible to further flare-ups.
Long-term management therefore focuses not only on treating active blisters but also on identifying and reducing contributing factors.
How Can You Reduce Future Flare-Ups?
Several simple foot-care measures may help.
Keep your feet cool and comfortable. Choose breathable footwear whenever practical and avoid prolonged use of tight, poorly ventilated shoes.
Change socks when they become damp. Moisture-wicking socks may help reduce prolonged exposure to sweat.
Wash your feet gently. Use mild, fragrance-free cleansers and avoid excessive scrubbing or harsh antiseptic washes.
Dry your feet carefully. Pay particular attention to the areas between the toes, where trapped moisture can encourage fungal infection.
Moisturise regularly. Apply a suitable moisturiser to dry or eczema-prone areas, especially after bathing.
Avoid scratching or deliberately bursting blisters. This may damage the skin and increase the risk of secondary bacterial infection.
Review possible footwear allergies. If flare-ups are consistently associated with particular shoes, assessment for contact allergy may be useful.
How Long Does Pompholyx Take to Heal?
A typical flare may last approximately two to four weeks, although the duration varies.
With appropriate treatment, itching and inflammation may begin to improve earlier.
However, the peeling and dryness that follow the blistering stage may take additional time to settle.
Some patients experience only occasional episodes, while others develop recurrent flare-ups over many months or years.
The aim of treatment is to relieve symptoms, help the skin heal and reduce the frequency and severity of future episodes.
When Should You See a Dermatologist?
You should seek medical assessment if :
Blisters repeatedly appear on your feet
Itching interferes with sleep or daily activities
The skin becomes painful, cracked or difficult to walk on
The rash does not improve with initial treatment
You are unsure whether the condition is eczema or fungal infection
There is increasing redness, warmth, swelling, pus or fever
Depending on the examination findings, a dermatologist may recommend fungal testing, patch testing for contact allergies or occasionally a skin biopsy if the diagnosis remains uncertain.
Final Thoughts
Pompholyx on the feet can be uncomfortable, especially when itchy blisters repeatedly develop and leave the skin dry, peeling or cracked.
Although the condition may recur, most patients can achieve good symptom control with appropriate treatment and regular skin care.
The key is to confirm the diagnosis, distinguish eczema from fungal infection, treat active inflammation and identify possible contributing factors.
If you experience recurrent itchy blisters or peeling skin on your feet, an accurate dermatological assessment can help determine the most suitable treatment.
Dr Lim Tzyy Huei is a Consultant Dermatologist at Pantai Hospital Batu Pahat, Johor, Malaysia, providing assessment and treatment for eczema, fungal skin infections and other conditions affecting the skin, hair and nails.
Disclaimer: This article is intended for general patient education and does not replace individual medical consultation, diagnosis or treatment advice. Itchy blisters and peeling skin on the feet may have different causes, including eczema and fungal infections. An accurate diagnosis is important, as treatment options may vary depending on the underlying condition and individual circumstances.
