How to Get Rid of an Armpit Rash

Armpit rash can be an uncomfortable and sometimes embarrassing issue. Rashes can be caused by a variety of factors, such as warm, humid environments, wearing tight clothes made of synthetic fabrics, or having a weakened immune system.

Common symptoms include red or reddish-brown patches, itching, and stinging or burning pain. Fortunately, there are several ways to treat and prevent armpit rashes, including natural remedies and lifestyle changes, which we will explore in the following article.

Identifying an Armpit Rash

Identifying the symptoms and causes of armpit rashes is the first step in finding the right treatment and relief. 

In this article, we will explore the common symptoms of armpit rashes and provide guidance on how to identify and manage this bothersome skin condition.

How a Rash Looks

When dealing with an armpit rash, it is essential to identify its symptoms. 

The rash typically appears as a red or reddish-brown patch with small bumps. 

Skin irritation, such as itching and scaling, can also accompany the rash, making it more uncomfortable.

Pain and Discomfort

An armpit rash can cause varying levels of pain and discomfort. While some rashes result in minor itching, others come with a stinging or burning sensation. 

Swelling and redness of the affected area might also be present, further contributing to the overall discomfort.

Signs of Infection and Swelling

If your armpit rash becomes inflamed, it might indicate an infection. Look for signs such as pus-filled bumps, increased redness, and fluid-filled blisters. 

Additionally, a fever may serve as a warning that an infection is present. In such cases, consulting with a medical professional is highly recommended.

Understanding Your Skin and Its Reactions

Understanding your skin and its reactions is essential for managing and preventing armpit rashes. Our skin is a complex organ that can react to various factors, including allergens, irritants, and changes in environmental conditions. 

It’s crucial to recognize that everyone’s skin is unique, and what works for one person may not work for another. 

Common Skin Reactions

Certain factors can irritate your skin, especially in areas with skin folds, like under your arms. 

One common cause is an allergic reaction to fragrances in personal care products. 

Children, in particular, may have more sensitive skin and be prone to rashes. Excessive scratching may lead to bleeding, which could worsen the condition. 

Encourage children not to scratch and keep their nails short to minimize damage.

Serious Skin Illness

In some cases, armpit rashes could result from chronic skin conditions or a weakened immune system. 

Common examples include eczema and psoriasis, causing scaling and inflammation in affected areas. Seek medical advice if symptoms persist or worsen.

If you suspect an underlying issue, consult a healthcare professional for guidance. Maintaining overall skin health can help minimize the risk of developing or exacerbating existing rashes.

Common Causes of Armpit Rashes

These rashes often occur due to a variety of factors, such as sweat, friction, allergies, or skin infections. 

In this section, we will explore the primary causes of armpit rashes, helping you identify the source of your discomfort and enabling you to take appropriate steps to address it.

Contact Dermatitis

Contact dermatitis may be triggered by irritants such as sweat, deodorant, clothing, and allergies.

Allergen contact dermatitis occurs due to an allergic reaction, while irritant contact dermatitis occurs when your skin is irritated by a substance. Friction from tight clothing can worsen the rash.


Infections like folliculitis, caused by ingrown hairs, can lead to armpit rashes. Poor hygiene may contribute to infections. 

Yeast infections, such as intertrigo, are common in areas prone to heat and humidity. HIV can cause an armpit rash as an immune response to the infection.

Another cause of armpit rash is a fungal infection like ringworm (tinea corporis). This infection creates a scaly, red, itchy rash that can affect various parts of your body, including the armpits.

Skin Conditions

Eczema, psoriasis, and inflammatory skin conditions can result in armpit rash. Atopic dermatitis tends to be chronic, while seborrheic dermatitis is triggered by stress. 

Inverse psoriasis occurs in skin folds, like the armpit. Miliaria, also known as heat rash, is caused by trapped sweat, and hidradenitis suppurativa results from inflamed sweat glands.

Acanthosis nigricans, often associated with underlying conditions like obesity or diabetes, can cause darkening and thickening of skin folds.

Treating the Rash at Home

Home remedies can provide effective relief for armpit rashes, often without the need for prescription treatments. 

The following promotes cooling and soothing of the skin and addresses the most important part of the rash condition- comfort.

Frequent Cool Showers 

Take frequent cool baths or showers to avoid sweat buildup under your arms.

Use a gentle, chemical-free body wash to cleanse your skin.

Cold Compress 

Applying a cold compress can help soothe itching and reduce inflammation. 

Use a clean cloth soaked in cold water or ice wrapped in a cloth. Apply it to the affected area for a few minutes.

Aloe Vera Gel 

Aloe vera has soothing and anti-inflammatory properties. 

Apply fresh aloe vera gel or an over-the-counter aloe vera product to the rash.

Oatmeal Bath 

Oatmeal can relieve itching and inflammation. 

Add colloidal oatmeal to a lukewarm bath and soak for 15-20 minutes.

Baking Soda 

Baking soda can also help soothe itchy skin. 

Put 1 to 2 cups of baking soda in a cool bath and soak the affected area for relief.


Cornstarch, often found in many households, has natural absorbent properties that help to keep the affected area dry, reducing irritation and discomfort. 

Apply a thin layer of cornstarch to the rash and reapply as needed to maintain dryness, reduce friction, and alleviate symptoms.

Green Tea Bags 

Brew a cup of green tea, let the tea bags cool, and then apply them to the rash. 

Green tea has anti-inflammatory properties that can address the discomfort.

Natural antiseptics have always been a part of home remedies for different ailments.

Coconut Oil and Tea Tree Oil 

Mix 4 tablespoons of virgin coconut oil with 6-8 drops of tea tree oil. 

Apply the mixture to the irritated skin in your armpit using a cotton ball.


Honey has natural antibacterial and wound-healing properties. 

Apply a thin layer of honey to the rash and leave it for 15-20 minutes before rinsing off.

Apple Cider Vinegar

Dilute apple cider vinegar with water and apply it to the rash using a cotton ball. 

It can help balance the skin’s pH and reduce itching.

An important part of treating the armpit rash is minimizing and avoiding further irritation of the skin.

Cotton Clothing 

Cotton is breathable and absorbs moisture, keeping the armpits dry and reducing friction. 

Opt for loose-fitting cotton garments to minimize irritation and allow the rash to heal more quickly.

Avoiding Irritation

Eliminate or swap any irritants, such as deodorants, scented soaps, or washing detergents.

To effectively treat an armpit rash at home, it’s crucial to identify and avoid irritants that may be exacerbating the condition. 

Opt for fragrance-free and hypoallergenic options to reduce the risk of irritation. Consider using a mild, non-alcoholic deodorant or antiperspirant to minimize the chances of further discomfort.

Refrain from Shaving 

One effective method to address armpit rash is to avoid shaving the affected area until the rash has cleared. 

Shaving can further irritate the skin and worsen the condition. 

Effective OTC Treatments Available

For most armpit rashes, over-the-counter (OTC) treatments can provide relief. Common options include hydrocortisone cream and oral antihistamines. 

It’s essential to follow the recommended directions for use and consult a pharmacist if necessary. Remember, if your rash doesn’t improve or worsens after trying OTC treatments, seek medical advice.

When to Seek Medical Help

While home remedies can often provide relief for armpit rashes, there are instances where medical intervention is necessary. 

If your armpit rash is persistent, severe, or accompanied by other symptoms, it’s time to consult a medical professional. 

They will examine your rash and provide the appropriate treatment based on the underlying cause. 

In some cases, prescription medications, such as topical or oral corticosteroids, antibiotics, or antifungal agents, may be necessary.

Factors Influencing Armpit Rashes

Understanding these factors is crucial in both preventing and effectively treating rashes in the underarm area.

Role of Increased Body Weight

If you are overweight, you may experience more friction and sweating in the armpit area. This creates a suitable environment for armpit rashes. 

To reduce the chances of developing a rash, manage your weight and keep the area clean and dry.

Diabetes: A Contributing Factor

Diabetes can cause poor circulation and skin problems, making you more prone to armpit rashes. 

Controlling your diabetes can help. Also, be cautious of allergens in your skin products, as they can cause allergic reactions.

Weakened Immune System

A weakened immune system increases your risk of armpit rashes. This can be due to infections or a reaction to allergens. 

Boosting your immunity through a healthy lifestyle can help you prevent these rashes, and clean, dry armpits can prevent contagious infections.

Preventing Underarm Irritations

Preventing armpit rashes is the key to maintaining healthy and comfortable underarms. 

This section delves into practical strategies and tips for avoiding underarm irritations, ranging from proper hygiene practices to clothing choices that can help keep your underarms rash-free.

Selecting the Right Product

Choosing the right deodorants and antiperspirants is crucial in preventing underarm rashes. Opt for products free of harsh chemicals and fragrances to minimize irritation. 

Select clothing made of breathable, natural materials like cotton to reduce friction and allow sweat to evaporate.

Improving Hygiene Practices

Establishing good hygiene habits helps minimize the risk of underarm rashes. Regularly wash and dry your armpits, but avoid scrubbing too harshly. 

Apply gentle moisturizers after washing to keep your skin hydrated. Be mindful of your shaving technique, as nicks and razor burn may also contribute to irritation.

Introducing Lifestyle Changes

Incorporate simple lifestyle changes to reduce the likelihood of underarm rashes. Maintain a healthy weight since excessive sweating and skin folds can worsen irritation. 

Monitor your diet for potential food triggers and stressors, as they can exacerbate skin conditions.

Frequently Asked Questions

What are the common causes of an armpit rash?

An armpit rash can be caused by allergic reactions, infections, or chronic conditions. 

Factors such as thin skin, folding, and hairiness in the armpit create an environment for moisture buildup and irritation, potentially leading to rashes.

How can I identify the type of rash I have?

To identify the type of rash, examine factors like texture, color, and accompanying symptoms. 

For a precise diagnosis, consult a healthcare professional.

What natural remedies can help alleviate the rash?

Natural remedies to alleviate armpit rash include aloe vera gel, cold compresses, and vitamin C-rich foods. 

Maintaining good personal hygiene and applying anti-inflammatory creams can also help.

When should I see a doctor about my rash?

Consult a doctor if the rash worsens and does not resolve within a few days.

Consider setting an appointment with the doctor if you experience fever, pus, or severe pain.

How can I prevent future occurrences of armpit rash?

To prevent armpit rash, keep the area clean and dry, avoid tight clothing, and choose hypoallergenic skincare products. 

Consider moisturizing with fragrance-free lotions and avoiding potential irritants in deodorants.

Are there any over-the-counter treatments for rashes?

Over-the-counter treatments, such as hydrocortisone cream or antifungal creams, can be effective for minor rashes. 

Consult your pharmacist or doctor to determine the best course of action.