Pimples in armpits Causes: Symptoms, and Treatment

Pimples in your armpits can show up in various signs and symptoms depending on its causes. They can be painful, itchy, or burning. Occasionally, pimples in your armpits can be painless, not itchy and totally harmless. These pimples may also be an indication of either harmless or more serious skin condition that needs medical attention.

The condition of having pimples in armpits is usually characterized by the following signs and symptoms that include the following:

  • Tiny or small raised spots in the armpits
  • Few or numerous small bumps underarms
  • Painful, itchy or burning bumps in the armpits
  • Painless and not itchy raised spots underarms
  • Redness, tenderness, swollen or inflamed skin in the armpits
  • Fluid-filled bumps and sore that crust over
  • Dry scales and flaky skin under the armpits

Apart from the above symptoms, pimples in your armpits can also accompany other strange symptoms such as:

  • Swollen lymph nodes
  • High fever
  • Headaches
  • Weakened joints
  • Large lump in the armpits
  • Difficult to move hand and others

In case you notice these strange symptoms, it could be a serious health condition that needs medical diagnosis and treatment. You should visit your doctor for medical checkup and treatment.

What Causes pimples under your armpits?

Your armpits may develop pimples or bumps due to various causes. Is quite important for you have a general knowledge about the common factors that can lead to pimples in your armpits. This can help you and your doctor to get a solution to your skin condition.

Some of the causes of pimples in armpits include:

1. Acne

Acne is a skin condition characterized by swollen bumps or pimples on the skin. These bumps can be in form of blackheads, whiteheads, cysts, pustules, and nodules.  They are can be either painless or slightly painful.

Your skin may develop acne when the pore or follicles are blocked. The skin has a natural tiny pore that connects to glands on the surface of the skin. The main role of these pores is to allow sweats, oil and dead skin cell to come out of the skin surface.

Clogged skin pores may result in the trapping of sweats, oil, keratin or dead skin cells under the surface of the skin. This can lead to inflammation and swollen bumps on your skin. the armpits are one of the body parts that have numerous skin pore for sweating hence high chances of developing underarm pimples.

2.  Contact Dermatitis

The other name of contact dermatitis is allergic eczema. This is a skin condition that you might develop when your body becomes directly in contact with harmful substance or chemical that stimulates an allergic reaction.

Exposing your armpits to substances such as harsh detergents, certain cosmetic products, latex material can lead an allergic reaction. Usually, skin irritants or allergens may burn, corrode and stimulate the skin to develop raised spots or bumps.

3. Heat Rash

Heat rash or sweat rash is a common cause of tiny itchy pimples in armpits. These pimples develop when the sweats are trapped under the skin surface. Blocked skin pores and high temperature that stimulates sweating is the risk factors that encourage armpit rash.

The chafing and friction in your armpits during physical activities may generate heat in your armpit that can lead to sweat rash. This often occurs during physical exercises such as running and walking for a long distance and duration.

4. Ringworms Infection

The infection of ringworms in your armpits can lead to itchy rash to the affected area. Ringworms in your armpits may show up symptoms such as dry white patches that are ringed shaped associated with tiny pimples or bumps.

Ringworms are yeast or fungal infection. It occurs when there is an overgrowth of skin fungus. The overgrowth of yeast in armpits is encouraged by excessively sweating, poor skin hygiene, hot moist environment, weakened the immune system, and after the use of antibiotics.

5. Razor Bumps

Pimples in armpits after shaving could be razor bumps. These are small red, pink or skin colored bumps that develop after shaving or waxing the hair using inappropriate procedure or tools. Razor bumps might be slightly painful or itchy.

These pimples are caused by ingrown hair. It occurs after the shaved hair curls or grows sideways inside the hair follicles.

6. Folliculitis

The skin of your armpits may develop itchy or painful pimples as consequence of folliculitis. This condition is caused by the bacterial infection of the hair follicles. Folliculitis in your armpits may also lead to redness, tenderness, and inflamed skin.

7.  Cancer

Lymphoma is a cancer of lymph node that might lead to chronic itchy pimples in your armpits that won’t go away easily. This condition can also lead to the growth of hard lumps or bumps in your armpit that may itch seriously.

8. Eczema

This is an autoimmune disorder that may lead to small pimples in your armpits or any other parts of your body. Eczema in armpits may show up symptoms such as dry itchy skin, red pimples that burst, ooze, and crust over.

9. Psoriasis

This is a chronic skin infection that may lead to itchy rash and pimples in armpits or any other parts of the body. Other symptoms of this condition include silvery white, pink, red scales or patches to the affected area

10. Boils

Boils or furuncles are pea-sized bumps or lump that may develop in your armpit. These bumps are usually painful, red and pus-filled. They are caused by the infection of the oil gland by bacteria. Chronic infection of boils can lead redness, tenderness and inflamed skin leading to cellulitis.

11. Other Causes

Your skin may develop pimples in armpits due to other rare causes or factors. They include:

  • Rosacea
  • Chickenpox
  • Scarlet fever
  • Std infections
  • Insect Bites
  • Diabetes and others

Does Armpit Pimples mean underarm Cysts

The underarm cysts may develop from the enlargement of the lymph nodes that are located in your armpit. Underarm cysts may show up as a lump or bump that varies in size as a small, pea-sized or large lump.

Underarm cysts are caused by the infection of the lymph glands by bacteria or virus. These cysts are may also develop due to any of the causes of pimples in armpits such as irritation, shaving, clogged skin pores, and cancer.

Your underarm cyst might be itchy, painful or not painful depending on the causal agent. Tiny and painless cyst under your armpit could be a symptom of a harmless condition that might go away without treatment.

For the case of itchy, painful or burning bumps in your armpits, it is advisable to seek the help of your doctor for diagnosis and treatment.

The development of underarm pimples that hurt so much could be an indication of a serious condition such as skin infection, cancer or other underlying condition. In case you develop pimples in armpits that hurt so much, you should visit your doctor to help in diagnosis and treatment.

Pimple vs Armpit Lump

Unlike pimples in armpits, the armpit lumps are large growth like bumps or nodules. These bumps develop from the enlargement or inflammation of lymph glands. These bumps can be painful, itchy or burning.

Sometimes, your armpits can also develop a painless lump. Weather painless or painful, armpits lump could be an indication of either benign or more serious health condition such as lymphoma cancer, boil or any other underlying infection of the lymph nodes.

If you notice the development of a strange armpit lump that looks worrisome, you should go for medical diagnosis and treatment

How to treat underarm Pimples

You can get rid of pimples in armpits using home remedies or medical treatment method depending on your skin condition. You can use home remedies when your armpits have small and few pimples that are caused by minor skin condition such as acne, allergic reaction, razor bumps, and ringworms.

Chronic pimples, bumps or lump in your armpit can be treated with the help of medical treatment. Visit your doctor to help you in diagnosis and treatment of your skin condition. Some of the treatment methods that your doctor might use include:

  • Prescription of oral medication such as anti-inflammatory, antibiotics, and antivirus drugs that can help to ease swollen lymph nodes.
  • Prescription of ointment cream that can help to soothe itchy rash, bumps or blisters in your armpits.
  • A surgical procedure to remove cancer cells that cause armpit lump.

Home Remedies for Pimples in Armpits

You can use the following home remedies to treat small and few pimples in your armpits that cannot advance into health complication. These remedies include:

1. Aloe Vera

You can use Aloe Vera cream or gel as a home remedy for pimples in your armpits. Aloe Vera has natural antibacterial, antifungal and anti-inflammatory abilities that may help to relieve pimples, bumps or lumps in your armpits.

How to use:

  • Wash your armpits with warm water
  • Pat dry it with a dry washcloth
  • Apply the Aloe Vera to the affected parts of the skin
  • Repeat this treatment three times daily until the pimples in your armpit clear away

2. Coconut Oil

The antiseptic, anti-inflammatory and soothing properties of coconut oil make it be an effective home remedy that you can use to treat pimples in armpits.

How to use:

  • Clean your armpits with warm water and pat dry it
  • Apply the coconut oil to the affected parts
  • Allow it to stay on your skin for the whole day or night
  • Repeat this treatment two times daily until underarm pimples go away

3. Baking Soda

Baking soda has astringent, antiseptic and anti-inflammatory abilities that can help to treat swollen lymph nodes and pimples in your armpits.

How to use:

  • Get 1 teaspoon of baking soda
  • Mix it with few drops of water to create a paste
  • Apply the paste to the affected skin area
  • Allow it to dry before you rinse it off
  • Repeat this steps three times daily unit the pimples in your armpits clear away

4. Apple Cider Vinegar

Apple cider vinegar is an effective home remedy that you can use to clear way pimples in armpits. It has natural antiseptic and anti-inflammatory that can help to ease swollen bumps in armpits.

How to use:

  • Get 2 teaspoons of apple cider vinegar
  • Soak a cotton ball into the solution for few seconds
  • Apply it to the affected skin area
  • Rinse it after about30 minutes
  • Repeat this procedure three times daily until the pimples in your armpit go away

5. Lemon Juice

You can use lemon juice as a remedy to treat pimples in your armpits. It has citric acid that can help to exfoliate your skin and treat pimples that are caused by clogged skin pores.

How to use:

  • Get a ¼ cup of the fresh lemon juice
  • Soak a cotton ball in the lemon juice
  • Apply it to the affected parts of your skin
  • Rinse it after about 20 minutes with cold water
  • Repeat this steps three times daily until the pimples in your armpit go away

When to See a Doctor

You can see a doctor over pimples in armpits in your notice the following conditions that include:

  • When pimples in your armpits have persisted for more than three weeks without going away
  • If the underarm pimples are too painful, itchy or burning that you cannot withstand
  • If the pimples in your armpits are associated with other strange symptoms such as fever, blisters, large lump and others

How to Prevent Pimples in Armpits

You can prevent pimples in your armpit using the following tips:

  • Wash your body regularly and maintain proper skin hygiene around your armpits
  • Ensure you avoid direct skin in contact with harmful substances
  • Wear loose-fitting that allow free ventilation of air around your armpits
  • Avoid wearing dump cloth
  • Eat a balanced diet to build the immune system
  • Do not share cloth and towel with others
  • Go for medical checkup regularly


  1. Pimples like-bumps under the arm: https://www.livestrong.com/article/320795-pimple-like-bumps-on-the-breast/
  2. Causes of underarm pimples: https://www.healthhype.com/causes-of-armpit-underarm-pimples-sores-and-lumps.html
  3. Armpit lumps: https://www.healthline.com/health/armpit-lump
  4. Armpit conditions: https://www.webmd.com/pain-management/picture-of-the-armpit#1
  5. How to get rid of zits in your armpits: https://www.wikihow.com/Get-Rid-of-a-Zit-on-Your-Armpit

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