When Something Touching Your Skin Leaves It Red, Itchy, Or Irritated

You switch laundry detergent and suddenly notice an itchy rash around your waist.

You wear a new piece of jewelry and the skin underneath becomes red.

Or maybe you've spent the afternoon gardening and wake up the next morning with an irritated rash on your arms.

Sometimes, the answer to "Why is my skin suddenly irritated?" is something your skin recently touched.

Contact dermatitis is a skin reaction that develops after direct contact with a substance that either irritates the skin or triggers an allergic response.

Possible triggers are everywhere—from soap and cleaning products to fragrances, cosmetics, jewelry, plants, workplace chemicals, and personal-care products.

Some reactions are mild and improve after the trigger is removed. Others can become intensely itchy, blistered, swollen, painful, or difficult to distinguish from another skin condition.

At Z-2-H Family Med & Urgent Care, our providers can evaluate appropriate non-emergency rashes and skin irritation and help determine whether contact dermatitis or another condition may be contributing.

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What Is Contact Dermatitis?

Contact dermatitis is inflammation of the skin caused by something that comes into direct contact with it.

The reaction generally falls into two main categories:

Irritant Contact Dermatitis

Something directly damages or irritates the skin barrier.

Allergic Contact Dermatitis

The immune system reacts to a substance after the skin has become sensitized to it.

Both can cause redness and itching, but they develop for different reasons.

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What Does Contact Dermatitis Look Like?

The appearance can vary considerably.

Possible symptoms include:

• Redness
• Itching
• Dryness
• Scaling
• Burning
• Tenderness
• Swelling
• Small bumps
• Blisters
• Cracked skin
• Oozing or crusting in more irritated areas

The rash often develops in the area that came into contact with the trigger.

That pattern can sometimes provide an important clue.

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What Does Contact Dermatitis Feel Like?

Some people mainly experience itching.

Others describe:

• Burning
• Stinging
• Tenderness
• Tight skin
• Raw or irritated skin

Irritant reactions may feel more burning or painful, while allergic reactions are often very itchy—but symptoms can overlap.

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What Is Irritant Contact Dermatitis?

Irritant contact dermatitis happens when a substance physically damages the skin's protective barrier.

It does not require a true allergy.

Common irritants may include:

• Soap
• Detergents
• Cleaning products
• Disinfectants
• Solvents
• Repeated water exposure
• Certain workplace chemicals

Anyone can potentially develop irritant dermatitis if the exposure is strong or frequent enough.

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Can Washing Your Hands Too Much Cause Dermatitis?

Yes.

Frequent handwashing can strip natural oils from the skin.

This is especially likely when combined with:

• Hot water
• Harsh soaps
• Cleaning chemicals
• Frequent sanitizer use
• Dry weather

The hands may become:

• Dry
• Red
• Cracked
• Sore
• Itchy

People who wash their hands frequently for work may be particularly affected.

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Who Gets Hand Dermatitis?

Hand dermatitis may be common among people who regularly work with:

• Water
• Cleaning products
• Food
• Chemicals
• Gloves
• Sanitizers

This can include:

• Healthcare workers
• Food-service employees
• Cleaning professionals
• Hairdressers
• Mechanics
• Childcare workers

Protecting the skin barrier can be an important part of preventing recurring symptoms.

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What Is Allergic Contact Dermatitis?

Allergic contact dermatitis occurs when the immune system recognizes a substance as an allergen and reacts after skin exposure.

Unlike an immediate allergy, the rash may not appear the moment the substance touches the skin.

It can take time to develop.

This sometimes makes the trigger difficult to identify.

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Can You Suddenly Become Allergic To Something You've Used Before?

Yes.

A person can become sensitized after repeated previous exposure.

That means you may tolerate a product for months or even years and later develop an allergic reaction to one of its ingredients.

This is one reason why the phrase "I've always used this" doesn't necessarily rule out contact allergy.

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What Commonly Causes Allergic Contact Dermatitis?

Possible allergens include:

• Nickel
• Fragrances
• Preservatives
• Cosmetics
• Hair dyes
• Adhesives
• Certain topical medications
• Rubber-related chemicals
• Plants such as poison ivy

The specific trigger differs from person to person.

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Can Jewelry Cause A Rash?

Yes.

Nickel is a common contact allergen.

It may be found in some:

• Earrings
• Necklaces
• Bracelets
• Watchbands
• Belt buckles
• Clothing fasteners

A rash may appear exactly where the metal touches the skin.

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Can Earrings Cause Contact Dermatitis?

They can.

A person may develop:

• Itching around the earlobe
• Redness
• Scaling
• Irritation
• Swelling

However, pain, warmth, pus, or significant swelling around a piercing can also indicate infection.

Not every irritated piercing is an allergy.

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Can A Watch Cause A Wrist Rash?

Yes.

A rash beneath a watch may result from:

• Metal allergy
• Rubber or adhesive sensitivity
• Sweat
• Friction
• Soap trapped beneath the band
• Moisture

The shape and location of the rash may provide clues.

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Can Laundry Detergent Cause A Rash?

Laundry products may sometimes irritate sensitive skin or contribute to contact reactions.

Possible triggers can include:

• Fragrance
• Dyes
• Preservatives
• Residue from detergent
• Fabric products

If a rash develops shortly after changing products, consider whether the new exposure may be relevant.

However, widespread rashes can have many other causes.

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Can Fabric Softener Cause Skin Irritation?

Potentially.

Fragrances and other ingredients may irritate sensitive skin.

If you suspect a laundry product, switching to a simpler fragrance-free product may help identify whether symptoms improve.

Avoid changing many products at the same time if you're trying to identify a specific trigger.

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Can Soap Cause Contact Dermatitis?

Yes.

Soap is a common irritant, particularly when used frequently.

Products containing:

• Strong fragrance
• Harsh cleansing agents
• Multiple additives

may be more irritating for some people.

A gentle cleanser may be better tolerated by sensitive skin.

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Can Hand Sanitizer Cause Dermatitis?

Frequent sanitizer use may contribute to dryness and irritation, particularly when the skin barrier is already damaged.

This doesn't mean hand hygiene should be abandoned.

Instead, people with recurrent irritation may benefit from:

• Appropriate moisturization
• Gentler products when available
• Avoiding unnecessary exposure to other irritants

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Can Cleaning Products Cause A Rash?

Yes.

Household cleaning products can irritate the skin, especially with repeated exposure.

Possible symptoms include:

• Dryness
• Redness
• Burning
• Cracking
• Itching

Follow product safety instructions and use appropriate protective equipment when recommended.

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Can Gloves Cause Contact Dermatitis?

Sometimes.

A reaction may be related to:

• Material in the glove
• Chemicals used during manufacturing
• Sweat trapped underneath
• Friction
• Products used inside the glove

If a particular type of glove repeatedly causes a rash, discuss alternatives with a healthcare professional or workplace safety team.

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Can Cosmetics Cause Contact Dermatitis?

Yes.

Potential triggers may be found in:

• Makeup
• Moisturizers
• Sunscreens
• Facial cleansers
• Perfumes
• Hair products
• Nail products

Facial skin is particularly sensitive, and eyelid skin is very thin.

A reaction may develop even when the product wasn't applied directly to the exact area where the rash appears.

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Why Are My Eyelids Itchy And Red?

Contact dermatitis can affect the eyelids.

Possible triggers include:

• Cosmetics
• Facial products
• Nail polish transferred by the fingers
• Fragrances
• Hair products
• Airborne substances

However, eye-area irritation can have other causes.

Significant eye swelling, eye pain, or vision changes require appropriate medical evaluation.

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Can Sunscreen Cause A Rash?

Some people react to certain ingredients in sunscreen.

This may involve:

• Irritation
• Allergy
• A reaction influenced by sunlight

Sun protection remains important.

If one product causes repeated problems, a healthcare professional can help discuss alternative formulations.

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Can Hair Dye Cause Contact Dermatitis?

Yes.

Certain hair-dye ingredients can trigger allergic contact dermatitis.

Symptoms may affect the:

• Scalp
• Hairline
• Ears
• Face
• Neck

Significant facial swelling, breathing difficulty, or rapidly worsening symptoms require urgent medical attention.

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Can Plants Cause Contact Dermatitis?

Yes.

One well-known example is poison ivy.

Poison ivy, poison oak, and poison sumac contain an oily substance called urushiol that can trigger allergic contact dermatitis in sensitized people.

The rash may become:

• Intensely itchy
• Red
• Swollen
• Blistered

The reaction may appear in streaks where the plant brushed against the skin.

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Is Poison Ivy Contagious?

The rash itself is not contagious.

Blister fluid does not spread poison ivy to another person.

However, urushiol can remain on contaminated:

• Clothing
• Shoes
• Tools
• Pet fur
• Outdoor equipment

until it is appropriately cleaned.

Contact with residual oil can cause a new reaction.

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Does Scratching Spread Poison Ivy?

Scratching does not spread the rash through blister fluid.

However, different areas may appear at different times depending on:

• Amount of exposure
• Skin thickness
• Timing of contact

Scratching can also damage the skin and increase the risk of secondary infection.

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Can Contact Dermatitis Spread?

The answer depends on what appears to be "spreading."

Allergic contact dermatitis can sometimes extend beyond the exact contact area because of the immune response.

New areas can also appear when an allergen remains on:

• Clothing
• Bedding
• Tools
• Skin
• Other objects

That doesn't necessarily mean the rash is contagious.

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Is Contact Dermatitis Contagious?

No.

Contact dermatitis itself is not an infection and does not spread from person to person simply by touching the rash.

However, some contagious skin conditions can look similar.

That is why diagnosis matters when the cause is unclear.

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How Quickly Does Contact Dermatitis Appear?

Timing varies.

Irritant Contact Dermatitis

May occur relatively quickly after a strong exposure or gradually after repeated mild exposures.

Allergic Contact Dermatitis

Often develops hours to days after exposure.

Delayed timing can make identifying the culprit challenging.

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How Long Does Contact Dermatitis Last?

Symptoms may gradually improve after the trigger is removed.

The rash can persist for days or sometimes longer, depending on:

• Severity
• Continued exposure
• Location
• Skin sensitivity
• Treatment

Repeated exposure can prevent the skin from fully recovering.

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Why Does My Rash Keep Coming Back?

Recurring dermatitis often means the skin continues to encounter a trigger.

Possible hidden exposures may include:

• Hand soap at work
• Cleaning chemicals
• Jewelry
• Gloves
• Fragrances
• Shampoo
• Cosmetics
• Occupational materials
• Adhesives

Keeping track of where the rash occurs and what touched that area can be useful.

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Can Stress Cause Contact Dermatitis?

Stress does not create a contact allergen.

However, stress may influence itching and can worsen some other inflammatory skin conditions.

If a rash consistently appears after contact with a specific substance, the exposure itself remains an important clue.

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Contact Dermatitis Vs. Eczema

The word eczema describes a group of inflammatory skin conditions.

Contact dermatitis is one type of eczematous skin reaction.

Atopic dermatitis, commonly called eczema, may be associated with:

• Chronic dry skin
• Recurring inflammation
• Personal or family history of allergic conditions

Contact dermatitis is more directly associated with an external exposure.

The two can also occur together.

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Contact Dermatitis Vs. Hives

Hives usually appear as raised, itchy welts that can:

• Change shape
• Move around
• Appear and disappear relatively quickly

Contact dermatitis more often causes:

• Persistent redness
• Dryness
• Scaling
• Blistering
• Irritation in areas of contact

A healthcare provider can help distinguish them.

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Contact Dermatitis Vs. Fungal Rash

Fungal infections may cause:

• Itching
• Scaling
• Redness
• Ring-shaped areas
• Rashes in warm or moist skin folds

Contact dermatitis can look similar.

Using the wrong treatment may delay improvement, so persistent rashes deserve evaluation.

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Contact Dermatitis Vs. Skin Infection

Contact dermatitis causes inflammation but isn't itself a bacterial infection.

Possible signs of infection include:

• Increasing pain
• Significant warmth
• Pus
• Rapidly spreading redness
• Fever
• Red streaking

These symptoms require medical evaluation.

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Contact Dermatitis Vs. Shingles

Shingles commonly causes:

• Pain
• Burning
• Tingling
• A blistering rash
• Symptoms primarily on one side of the body

Contact dermatitis is more closely associated with the pattern of an external exposure.

A painful blistering rash should be evaluated, especially when shingles is possible.

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How Is Contact Dermatitis Diagnosed?

Diagnosis often begins with the story of the rash.

Your provider may ask:

• When did it begin?
• Where did it start?
• Does it itch or burn?
• Have you changed products?
• Did you recently garden?
• Do you wear jewelry in that area?
• What do you use at work?
• Have you used a new medication or cream?
• Has anyone else developed a rash?

The pattern and location can provide valuable clues.

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Why Does The Shape Of The Rash Matter?

Contact dermatitis sometimes follows the shape of the exposure.

Examples might include:

• A rectangular rash beneath an adhesive
• A circular rash under a watch
• Irritation around a belt buckle
• A rash beneath jewelry
• Linear streaks after plant exposure

These patterns can make an external trigger more likely.

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What Is Patch Testing?

When allergic contact dermatitis repeatedly occurs and the trigger isn't clear, a specialist may recommend patch testing.

Small amounts of potential allergens are applied to the skin in a controlled manner and monitored for delayed reactions.

Patch testing is different from the testing commonly used for immediate environmental allergies.

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How Is Contact Dermatitis Treated?

Treatment depends on:

• Cause
• Severity
• Location
• Extent of the rash
• Whether infection is present

The most important step is often:

IDENTIFY THE TRIGGER → AVOID RE-EXPOSURE → HELP THE SKIN BARRIER RECOVER

Additional treatment may include appropriate topical medication or other therapy based on clinical evaluation.

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Should You Stop Using A New Product?

If a new product clearly appears to be causing irritation, discontinuing it may be reasonable.

However, don't stop a medically necessary prescription treatment without speaking with an appropriate healthcare professional unless you are experiencing a serious reaction requiring emergency care.

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Can Moisturizer Help?

Moisturizers can support the skin barrier, particularly when dryness and irritation are present.

Consider products that are:

• Fragrance-free
• Simple
• Designed for sensitive skin

A product advertised as "natural" is not automatically less likely to cause irritation or allergy.

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Is Fragrance-Free The Same As Unscented?

Not always.

An unscented product may contain ingredients intended to mask odors.

A fragrance-free product is generally formulated without added fragrance ingredients.

People with fragrance sensitivity should read labels carefully.

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Can Hydrocortisone Help?

Over-the-counter hydrocortisone may be appropriate for some mild inflammatory skin reactions.

However, treatment depends on:

• Rash location
• Patient age
• Severity
• Skin condition
• Possible infection

Steroid products should be used cautiously around sensitive areas such as the face, eyelids, and skin folds.

Ask a healthcare professional when unsure.

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Should You Put Antibiotic Ointment On It?

Not automatically.

Contact dermatitis is not a bacterial infection.

Some topical antibiotic products can themselves cause allergic contact dermatitis in certain people.

Use antibiotic products when medically appropriate rather than applying them to every rash.

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Should You Scratch An Itchy Rash?

Try not to.

Scratching can:

• Damage the skin
• Increase inflammation
• Cause bleeding
• Increase infection risk
• Prolong healing

Keeping fingernails short can help reduce skin injury, particularly in children.

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Can A Cool Compress Help?

A cool, damp compress may temporarily soothe itching or burning for some people.

Avoid placing ice directly against irritated skin.

Comfort measures don't replace evaluation when the rash is severe, infected, or unexplained.

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How Can You Protect Your Hands At Work?

If workplace exposure contributes to dermatitis:

• Follow safety instructions
• Use appropriate protective equipment
• Choose suitable gloves
• Avoid prolonged unnecessary chemical contact
• Moisturize after washing when appropriate
• Replace damaged gloves
• Keep the inside of gloves reasonably dry

Occupational dermatitis may require both medical care and changes to workplace exposure.

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Should You Wear Gloves While Cleaning?

Appropriate gloves may reduce direct contact with cleaning products.

However, prolonged glove use can trap:

• Sweat
• Moisture
• Heat

which may irritate already sensitive skin.

Use gloves appropriate for the product and task, and follow safety instructions.

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When Should A Rash Be Evaluated?

Consider medical evaluation when:

• The cause isn't clear
• The rash is worsening
• It keeps returning
• It involves a large area
• It is significantly painful
• Blistering is extensive
• It affects the face or eyes
• Symptoms interfere with sleep
• Home measures aren't helping
• You suspect infection

An evaluation can help determine whether contact dermatitis is actually the correct diagnosis.

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When Does A Rash Need Prompt Medical Attention?

Seek prompt care for:

• Rapidly spreading redness
• Increasing warmth
• Significant pain
• Pus or drainage
• Fever
• Red streaking
• Extensive blistering
• Significant facial or eye-area swelling
• Severe skin breakdown

These symptoms may indicate infection or a more serious reaction.

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When Is A Skin Reaction An Emergency?

Call 911 for signs of a severe allergic reaction, including:

• Difficulty breathing
• Throat tightness
• Significant tongue swelling
• Significant lip swelling
• Fainting
• Severe dizziness
• Rapidly worsening symptoms affecting breathing or circulation

These symptoms may indicate anaphylaxis, which is different from ordinary contact dermatitis.

Do not wait to see whether breathing symptoms improve on their own.

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What To Expect During Your Visit

During an evaluation, your provider may:

• Examine the rash
• Identify its pattern
• Ask when it started
• Review new products
• Ask about work exposures
• Discuss jewelry
• Review medications
• Ask about outdoor or plant exposure
• Look for signs of infection
• Compare the rash with other skin conditions
• Recommend treatment
• Discuss specialist referral or patch testing when appropriate

The goal is not simply to make the rash disappear.

It is to identify what may be triggering it so you can reduce the chance of it coming back.

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Why Choose Z-2-H Family Med & Urgent Care?

Our providers can evaluate many common non-emergency skin concerns, including appropriate cases of:

• Itchy rashes
• Skin irritation
• Contact dermatitis
• Allergic skin reactions
• Dry or inflamed skin
• Possible skin infections

Your provider can help determine whether symptoms appear consistent with contact dermatitis or another condition and recommend treatment or referral when appropriate.

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Frequently Asked Questions

What Is Contact Dermatitis?

Contact dermatitis is skin inflammation that develops after direct contact with an irritant or an allergen.

What Is The Difference Between Irritant And Allergic Contact Dermatitis?

Irritant dermatitis results from direct damage to the skin barrier, while allergic dermatitis involves an immune reaction to a substance.

What Does Contact Dermatitis Look Like?

It may cause redness, itching, dryness, scaling, bumps, swelling, cracking, or blisters.

Is Contact Dermatitis Contagious?

No. Contact dermatitis itself is not contagious.

Can Laundry Detergent Cause Contact Dermatitis?

Certain ingredients in laundry products may irritate sensitive skin or trigger an allergic reaction.

Can You Suddenly Become Allergic To A Product You've Used For Years?

Yes. Allergic sensitization can develop after previous exposures.

Does Scratching Spread Contact Dermatitis?

Scratching doesn't make contact dermatitis contagious, but it can damage the skin and increase infection risk.

Is Poison Ivy Contagious?

The rash itself is not contagious. However, urushiol oil remaining on clothing, tools, pet fur, or other objects can expose another area or person.

Can Hydrocortisone Help Contact Dermatitis?

It may be appropriate for some mild inflammatory reactions, but treatment depends on the location and severity of the rash and whether another condition is present.

When Should I Worry About A Rash?

Seek medical evaluation for worsening, recurrent, painful, extensively blistered, infected, or unexplained rashes. Breathing difficulty or significant swelling of the lips, tongue, or throat requires emergency care.

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Call To Action

If you've developed a red, itchy, burning, dry, blistered, or irritated rash after using a new product—or you keep experiencing a rash in the same area—something touching your skin may be contributing.

The providers at Z-2-H Family Med & Urgent Care can evaluate appropriate non-emergency rashes and help determine whether contact dermatitis, eczema, infection, or another skin condition may be responsible.

We proudly serve patients in Brownwood, Keller, Arlington, and surrounding Texas communities.

Learn more about our Primary Care and Urgent Care services: https://www.z-2-h.com

Schedule an appointment: https://www.z-2-h.com

Severe Allergy Reminder

Difficulty breathing, throat tightness, significant tongue or lip swelling, fainting, or rapidly worsening symptoms may indicate a severe allergic reaction. Call 911 immediately.