Fast answer
The exact cause of dyshidrotic eczema is often unknown, but several factors may aggravate the condition or contribute to recurring flare-ups.
Commonly reported triggers include:
• Heat and sweating
• Stress
• Repeated contact with water
• Soaps, detergents and cleaning products
• Sensitivity to metals such as nickel, cobalt or chromate
• Personal-care products
• Occupational exposure to irritants
• Damp footwear and sweaty feet
A trigger is not necessarily the underlying cause of the condition. Different people may react to different exposures, and some flare-ups occur without one identifiable explanation.
Keeping a simple record of your activities, products, weather conditions and symptoms may help you notice patterns without assuming that every flare has a single cause.
For a complete explanation of symptoms, diagnosis and treatment, begin with our dyshidrotic eczema guide.
What you will learn in this guide
In this guide, you will learn:
• Why the exact cause of dyshidrotic eczema is difficult to identify
• How heat and sweating may aggravate flare-ups
• Why water, soaps and cleaning products can be problematic
• When sensitivity to nickel, cobalt or chromate may be relevant
• How personal-care products and workplace exposures can affect the skin
• How to keep a practical flare-up diary
• When recurring symptoms require professional assessment
What is dyshidrotic eczema?
Dyshidrotic eczema is a recurring form of eczema that causes small, intensely itchy, fluid-filled blisters.
It is also known as pompholyx or vesicular eczema.
It most commonly affects:
• The palms of the hands
• The sides of the fingers
• The soles of the feet
• The sides of the toes
A flare may begin with itching, prickling or burning beneath the skin. Small, deep-seated blisters can then appear in groups and sometimes join to form larger blisters.
As they settle, the blisters may dry and the skin can become flaky, peeling, thickened, cracked or painful.
Dyshidrotic eczema is not contagious. It cannot be caught from another person or passed through physical contact.
What is the difference between a cause and a trigger?
The cause of a condition explains why it develops.
A trigger is something that may start a flare, prolong it or make existing symptoms worse.
The exact cause of dyshidrotic eczema is not fully understood. It was once believed to result from blocked sweat ducts, but this explanation is no longer accepted.
Sweating may still aggravate symptoms for some people, but the condition is not simply caused by sweat becoming trapped beneath the skin.
Several associated factors have been identified, including:
• Irritant contact dermatitis
• Allergic contact dermatitis
• Metal sensitivity
• Excessive sweating
• Atopic eczema
• Fungal infection
• Workplace exposure to irritants
These associations do not mean that every person with dyshidrotic eczema has the same cause or trigger.
A flare may result from several factors acting together. It may also appear without one obvious explanation.
Can heat and sweating trigger dyshidrotic eczema?
Heat and sweating are frequently reported around dyshidrotic eczema flare-ups.
Symptoms may worsen:
• During hot weather
• In humid conditions
• After exercise
• While wearing non-breathable gloves
• Inside warm or restrictive footwear
• During hot, physical work
• When hands remain damp for extended periods
Sweat can remain against the skin inside gloves, shoes or socks. Heat and prolonged dampness may increase discomfort and aggravate already reactive skin.
Practical steps include:
• Removing damp gloves promptly
• Changing sweaty socks
• Choosing breathable footwear
• Allowing shoes to dry before wearing them again
• Taking breaks during hot physical work
• Using lukewarm rather than very hot water
• Keeping hands and feet comfortably cool
If excessive sweating is persistent and appears closely connected to repeated flare-ups, speak to a doctor or dermatologist. Treatments for excessive sweating may be considered in certain circumstances.
Can stress cause a flare-up?
Stress does not mean that dyshidrotic eczema is imaginary or entirely psychological.
However, emotional stress is commonly reported as a factor that may aggravate the condition or make a flare last longer.
Stress may also affect behaviour. Someone who is worried, tired or sleeping poorly may:
• Scratch more frequently
• Wash their hands more often
• Forget to moisturise
• Experience increased sweating
• Find it harder to avoid known irritants
It is rarely helpful to tell someone simply to “stop being stressed”. Stress is not always avoidable, and people should not be blamed for their skin condition.
More realistic steps may include:
• Identifying particularly stressful periods
• Protecting sleep where possible
• Keeping nails short to reduce scratching damage
• Maintaining a simple skincare routine
• Taking short breaks during demanding work
• Seeking appropriate support when stress becomes difficult to manage
A stress-related pattern may become clearer when symptoms repeatedly worsen during similar periods.
Can repeated contact with water trigger dyshidrotic eczema?
Water itself is not an allergen, but repeated wetting and drying can remove protective oils from the skin.
This can weaken the skin barrier and make the hands more vulnerable to other irritants.
Wet work includes:
• Washing dishes
• Cleaning bathrooms
• Mopping floors
• Handwashing throughout a working day
• Washing hair repeatedly
• Food preparation
• Healthcare work
• Hairdressing and beauty work
• Working with water, oils or other fluids
Hot water can be particularly drying.
When washing:
• Use lukewarm rather than very hot water
• Choose a gentle fragrance-free cleanser
• Avoid scrubbing the affected skin
• Pat the hands dry rather than rubbing
• Apply a suitable moisturiser afterwards
• Wear appropriate gloves for prolonged wet work
Do not continue wearing gloves if water enters them or the hands become hot and sweaty.
Our complete guide to hand eczema explains how washing, wet work and repeated exposure to irritants can affect the entire hand.
Can soaps, detergents and cleaning products cause flare-ups?
Soaps, detergents and cleaning products can remove oils from the skin and increase irritation.
Potentially problematic products include:
• Washing-up liquid
• Household bleach
• Disinfectant sprays
• Surface cleaners
• Laundry detergents
• Solvents
• Degreasers
• Strong hand cleansers
• Industrial cleaning products
Even brief exposure can matter when it happens many times throughout the day.
Avoid touching concentrated cleaning products directly. Wear suitable gloves and follow the manufacturer’s safety instructions.
Be aware that residue can remain on:
• Cleaning cloths
• Sponges
• Taps
• Bottle handles
• Work surfaces
• Glove interiors
A product described as natural, plant-based or environmentally friendly may still irritate damaged skin.
Natural does not automatically mean gentle or suitable for eczema-prone hands.
Can nickel, cobalt or chromate trigger dyshidrotic eczema?
Sensitivity to certain metals may be relevant for some people with recurring dyshidrotic eczema.
Metals commonly discussed include:
• Nickel
• Cobalt
• Chromate
Possible everyday or occupational sources include:
• Jewellery
• Coins
• Keys
• Tools
• Belt buckles
• Metal fastenings
• Mobile-phone cases
• Watch straps
• Machinery
• Cement and building materials
However, not everyone with dyshidrotic eczema is allergic to metal.
Do not assume that touching any metal will automatically cause a flare. Unnecessary avoidance can become difficult and may distract from more relevant triggers.
If symptoms repeatedly appear after handling particular objects or workplace materials, discuss patch testing with a dermatologist.
Patch testing can help identify allergic contact dermatitis. It is different from the skin-prick testing commonly used to investigate immediate allergies.
Should you change your diet because of nickel or cobalt?
Nickel and cobalt occur naturally in many foods.
A dermatologist may occasionally recommend a medically supervised dietary change when testing confirms metal sensitivity and recurring symptoms appear connected to that sensitivity.
However, you should not begin a highly restrictive diet simply because you have dyshidrotic eczema.
Unsupervised avoidance can:
• Remove nutritious foods unnecessarily
• Make meals difficult to manage
• Create anxiety around eating
• Fail to address the actual trigger
• Lead to nutritional imbalance
Discuss suspected metal sensitivity with a dermatologist before making significant dietary changes.
Food is not the cause of every dyshidrotic eczema flare, and an online list cannot determine which foods are relevant to you.
Can skincare and personal-care products trigger flare-ups?
Hands come into contact with many personal-care products throughout the day.
Potential exposures include:
• Hand washes
• Shower products
• Shampoo and conditioner
• Hair colour
• Styling products
• Facial skincare
• Fragranced hand creams
• Nail products
• Essential oils
• Household wipes
A product does not have to be applied as hand cream to affect the hands. Shampoo, cleanser and hair products all pass over the fingers during use.
Added fragrance and essential oils may cause irritation or allergic contact dermatitis in susceptible skin.
Choose fragrance-free products where practical and rinse the hands thoroughly after contact with products that are not intended to remain on the skin.
If one particular product repeatedly appears to precede a flare, stop using it temporarily and discuss the reaction with a pharmacist, doctor or dermatologist.
Avoid changing every product simultaneously. If symptoms improve, changing everything at once makes it difficult to identify which exposure was relevant.
Can work trigger dyshidrotic eczema?
Some occupations expose the hands to water, heat, friction, sweating, gloves, chemicals or metal repeatedly.
Higher-exposure work can include:
• Healthcare
• Hairdressing and beauty
• Cleaning
• Catering and food preparation
• Construction
• Mechanics
• Metalworking
• Manufacturing
• Farming
• Laboratory work
• Work requiring frequent handwashing
An occupational trigger may be suspected when symptoms:
• Worsen during the working week
• Improve during holidays or extended time away
• Affect the hand used for a particular task
• Appear after using a specific product or material
• Become worse inside protective gloves
Do not stop wearing safety equipment without professional advice.
Protective gloves may be essential even if heat or sweat inside them aggravates the skin. The safer approach may involve changing glove type, using cotton liners, taking appropriate glove breaks or reviewing working procedures.
Report persistent work-related skin problems through the appropriate workplace-health process. Occupational-health advice or dermatology assessment may help identify safer protective measures.
Can footwear trigger dyshidrotic eczema on the feet?
Footwear can trap heat and sweat around the soles and toes.
Problems may be more likely when:
• Shoes are tight or non-breathable
• Socks remain damp
• The same shoes are worn before drying fully
• Feet sweat heavily
• Friction repeatedly affects the same area
• The person reacts to shoe materials, dyes, adhesives or rubber components
Practical steps include:
• Choosing breathable socks
• Changing damp socks promptly
• Allowing shoes to dry between uses
• Rotating footwear where possible
• Avoiding excessively tight shoes
• Washing and drying the feet gently
• Applying a suitable moisturiser to dry areas
Persistent blistering or peeling on the feet should be professionally assessed because fungal infections can resemble or coexist with dyshidrotic eczema.
Can a fungal infection be involved?
A fungal infection of the hands or feet can sometimes be associated with a dyshidrotic-like eruption.
Athlete’s foot may cause:
• Peeling between the toes
• Itching
• Cracking
• Scaling
• Changes affecting one foot more than the other
However, appearance alone is not always enough to distinguish fungal infection from eczema.
Do not repeatedly apply antifungal or eczema treatments without knowing what condition you are treating.
A GP, pharmacist or dermatologist may examine the skin and arrange testing when necessary.
Can the weather affect dyshidrotic eczema?
Some people notice that flare-ups occur more frequently during spring or summer.
Possible contributing factors include:
• Rising temperatures
• Increased sweating
• Humidity
• More time wearing protective gloves
• Changes in work or outdoor activity
Others may experience more dryness and cracking during colder weather.
Seasonal timing can provide a useful clue, but it does not prove that weather is the only trigger. Work patterns, products, footwear, stress and sweating may also change with the seasons.
Recording the weather alongside other exposures may help reveal a more complete pattern.
How to keep a dyshidrotic eczema flare-up diary
A flare-up diary does not need to be complicated.
Record:
• The date symptoms began
• Which hand, foot, fingers or toes were affected
• Whether the skin was itchy, burning, blistered, peeling or cracked
• Work and household activities
• Products used on or handled by the skin
• Glove use
• Heat and sweating
• Footwear and damp socks
• Contact with metals
• Unusual stress or sleep disruption
• Any prescribed or cosmetic products used
• How long the flare lasted
Photographs taken in similar lighting may help you compare changes, but they should not replace professional diagnosis.
Look for repeated patterns across several flares. One exposure occurring once before a flare does not prove that it caused the condition.
What should you do when a flare begins?
When itching, burning or small blisters appear:
• Avoid scratching or deliberately bursting the blisters
• Reduce unnecessary wet work
• Use lukewarm rather than hot water
• Pat the skin dry carefully
• Apply a suitable fragrance-free moisturiser
• Remove damp gloves or socks
• Keep hands and feet comfortably cool
• Follow any prescribed treatment instructions
Moisturiser can support the skin barrier and reduce dryness, but it may not control significant active inflammation.
Our guide to dyshidrotic eczema treatment without steroids explains what steroid-free care can realistically achieve and when medical treatment remains necessary.
If you are choosing a daily moisturiser, our guide to the best cream for dyshidrotic eczema explains the differences between creams, ointments and lotions.
Where Bragan Atopic Cream fits
Bragan Atopic Cream is a cosmetic moisturiser developed for dry, sensitive and irritation-prone skin.
It is:
• Fragrance-free
• Designed to moisturise dry and uncomfortable skin
• Made to support the skin barrier
• Suitable for regular daily skincare
• Available in 50ml and 100ml sizes
Its role is to provide moisture and barrier support, particularly when the skin becomes dry, tight or begins peeling after a flare.
It does not identify or remove the underlying trigger. It does not treat or cure dyshidrotic eczema and should not replace prescribed medication.
Avoid applying cosmetic products directly to infected, heavily weeping or open skin unless a healthcare professional confirms that the product is suitable.
Patch-test first if your skin is particularly reactive.
You can view the complete ingredients, directions and available sizes on the Bragan Atopic Cream product page.
From our County Monaghan snail farm to sensitive skincare
Bragan Skincare began on our family-run snail farm in County Monaghan.
Working directly with snail mucin encouraged us to explore how it could be incorporated into straightforward cosmetic formulations for dry, sensitive and irritation-prone skin.
Our approach focuses on moisture, barrier support and day-to-day comfort. We do not present cosmetic skincare as a cure or replacement for appropriate medical treatment.
People dealing with recurring flare-ups deserve honest information about what skincare can support, what it cannot do and when professional assessment matters.
When should you seek medical advice?
Contact a GP, pharmacist or dermatologist if:
• This is your first blistering outbreak
• You are uncertain whether the condition is dyshidrotic eczema
• The blisters are widespread, unusually large or very painful
• Redness is spreading
• The skin becomes hot or increasingly swollen
• You notice pus, yellow crusting or an unpleasant smell
• You feel unwell or develop a temperature
• Deep cracks interfere with walking or using your hands
• Symptoms repeatedly return without an identifiable pattern
• You suspect an occupational exposure
• You believe you may have a metal or product allergy
• Your sleep or work is regularly affected
• Careful trigger avoidance and skincare are not helping
A dermatologist may consider patch testing when allergic contact dermatitis is suspected. Testing may also be needed to exclude fungal infection or another blistering condition.
How we researched this guide
This guide was prepared using established information about pompholyx and possible aggravating factors from recognised medical and dermatology organisations.
The exact cause of dyshidrotic eczema remains uncertain. The article therefore describes heat, sweating, stress, irritants, metals and other exposures as possible triggers or associated factors rather than guaranteed causes.
The guidance has been translated into straightforward, practical language. It is intended for general education and does not replace diagnosis, allergy testing or treatment from a qualified healthcare professional.
Sources and further reading
National Eczema Society guidance on pompholyx triggers
American Academy of Dermatology information on dyshidrotic eczema causes
DermNet information on dyshidrotic eczema
Frequently asked questions
What is the most common trigger for dyshidrotic eczema?
There is no single trigger that applies to everyone. Heat, sweating, stress, wet work, irritants and metal sensitivity are frequently discussed, but some flare-ups occur without one identifiable explanation.
Can stress trigger dyshidrotic eczema?
Stress may aggravate the condition or make a flare last longer for some people. It can also affect sweating, scratching, sleep and skincare habits. Stress is not the only possible trigger and does not mean the condition is psychological.
Can handwashing cause dyshidrotic eczema?
Handwashing does not necessarily cause the condition, but repeated exposure to water, cleansers and drying can damage the skin barrier and aggravate eczema-prone hands.
Does nickel cause dyshidrotic eczema?
Nickel sensitivity may be relevant for some people, but not everyone with dyshidrotic eczema is allergic to nickel. A dermatologist may recommend patch testing when a metal allergy is suspected.
Should I avoid foods containing nickel or cobalt?
Do not begin a restrictive diet without professional advice. Dietary changes may occasionally be considered when metal sensitivity has been confirmed, but they are not appropriate or necessary for everyone.
Can sweating make dyshidrotic eczema worse?
Yes, heat and sweating may aggravate flare-ups for some people. Removing damp gloves or socks, choosing breathable footwear and keeping the hands and feet comfortably cool may help.
How can I identify my triggers?
Keep a simple diary recording when symptoms begin, the areas affected, products used, wet work, glove use, sweating, stress and metal contact. Look for patterns across several flare-ups rather than assuming that one exposure caused the condition.
Final thoughts
The exact cause of dyshidrotic eczema is often difficult to identify.
Possible triggers include:
• Heat and sweating
• Stress
• Wet work
• Soaps and detergents
• Personal-care products
• Metal sensitivity
• Occupational exposure
• Damp footwear
• Fungal infection
These factors do not affect everyone in the same way.
The most useful approach is to identify repeated personal patterns, reduce avoidable irritation and seek professional assessment when symptoms persist or a specific allergy is suspected.
Avoid removing numerous foods, products or essential safety equipment based on guesswork alone.
Combine sensible trigger management with regular moisturising, appropriate prescribed treatment and medical advice when needed.
Return to our complete dyshidrotic eczema guide for more information about symptoms, diagnosis and treatment.
