Skin Tags in the Armpit: Causes, Symptoms, Treatment Options, and When to See a Doctor
Skin tags are among the most common benign skin growths that people experience during adulthood. Although they can appear almost anywhere on the body, the armpits are one of the most frequent locations because of constant skin friction and moisture. While skin tags are usually harmless, they can become bothersome if they rub against clothing, jewelry, or during shaving.
If you’ve noticed a small, soft growth under your arm, you may be wondering whether it’s a skin tag, what causes it, and whether it requires treatment. This comprehensive guide explains everything you need to know about armpit skin tags, including their causes, symptoms, treatment options, prevention tips, and when it’s important to consult a healthcare professional.
What Are Skin Tags?
Skin tags, medically known as acrochordons, are small, soft, noncancerous growths that hang from the skin by a thin stalk. They are made up of collagen fibers, blood vessels, and normal skin tissue.
Skin tags are extremely common, particularly among adults over the age of 30. Most people develop at least one skin tag during their lifetime, and many have several.
These growths are not contagious, do not spread from person to person, and are generally considered harmless.
Why Do Skin Tags Develop in the Armpit?
The armpits provide an ideal environment for skin tags because the skin frequently rubs against itself and clothing. Constant friction may contribute to their formation over time.
Several factors can increase the likelihood of developing skin tags.
1. Skin Friction
One of the most common causes is repeated rubbing between skin surfaces or between skin and clothing.
The underarm experiences friction during:
- Walking
- Running
- Exercise
- Wearing tight clothing
- Shaving
This repeated irritation may contribute to skin tag development.
2. Excess Body Weight
People who are overweight or have obesity often have more skin folds, leading to increased friction.
This may increase the chances of developing skin tags in areas such as:
- Armpits
- Neck
- Groin
- Under the breasts
3. Aging
Skin tags become more common with age.
Middle-aged and older adults are more likely to develop them, although younger adults can also be affected.
4. Genetics
Some people simply inherit a tendency to develop skin tags.
If several family members have them, your likelihood may be higher.
5. Hormonal Changes
Hormonal fluctuations may contribute to skin tag formation.
This is why they sometimes appear during:
- Pregnancy
- Hormonal changes associated with aging
- Certain endocrine conditions
6. Insulin Resistance
Some research has found an association between multiple skin tags and insulin resistance, a condition in which the body’s cells respond less effectively to insulin.
Although skin tags themselves do not cause diabetes, having many skin tags may prompt a healthcare provider to evaluate other risk factors if clinically appropriate.
Symptoms of Armpit Skin Tags
Most skin tags produce no symptoms at all.
They are often discovered accidentally while:
- Showering
- Shaving
- Applying deodorant
- Getting dressed
Common characteristics include:
- Small, soft growth
- Flesh-colored or slightly darker
- Attached by a narrow stalk
- Smooth or slightly wrinkled surface
- Flexible texture
- Usually painless
Most skin tags measure between 2 and 5 millimeters, although some can grow larger.
Can Skin Tags Become Painful?
Skin tags usually do not hurt.
However, they may become uncomfortable if they:
- Twist on their stalk
- Become irritated by clothing
- Rub repeatedly during movement
- Are accidentally cut while shaving
- Become caught on jewelry
In these situations, the skin tag may become:
- Red
- Tender
- Swollen
- Slightly painful
Bleeding may occur if the tag is injured.
Are Skin Tags Dangerous?
In the vast majority of cases, skin tags are completely harmless.
They are not considered cancerous and rarely develop into serious medical problems.
However, not every skin growth is a skin tag. Some conditions that may resemble skin tags require medical evaluation.
Conditions That Can Look Similar
Several skin conditions may resemble skin tags, including:
- Warts
- Seborrheic keratoses
- Moles
- Neurofibromas
- Certain cysts
- Rare forms of skin cancer
Because of this, any new or unusual skin growth should be evaluated if its appearance is uncertain.
Diagnosis
Healthcare professionals usually diagnose skin tags during a simple physical examination.
In most cases, no laboratory tests are necessary.
If the growth has an unusual appearance or raises concern, a small sample may be removed and examined under a microscope.
Treatment Options
Treatment is not medically necessary unless the skin tag causes discomfort or cosmetic concerns.
1. Cryotherapy
A healthcare provider freezes the skin tag using liquid nitrogen.
The growth typically falls off after several days.
2. Surgical Removal
A doctor may remove the skin tag using sterile surgical scissors or a scalpel.
This procedure is usually quick and performed in the office.
3. Electrocautery
Electrocautery removes the skin tag using controlled heat generated by an electrical current.
It also helps reduce bleeding.
4. Ligation
Some healthcare providers remove skin tags by tying off their blood supply.
Without blood flow, the tissue eventually dries up and falls off.
Should You Remove Skin Tags at Home?
Although many home remedies are promoted online, removing skin tags yourself is generally not recommended.
Attempting to cut or remove a skin tag at home may lead to:
- Bleeding
- Infection
- Scarring
- Incomplete removal
- Mistaking another type of skin growth for a harmless skin tag
Commercial skin tag removal products should be used only according to their instructions, and it is wise to seek medical advice if you are unsure whether the growth is actually a skin tag.
What About Natural Remedies?
Various natural remedies, such as tea tree oil, apple cider vinegar, or herbal preparations, are often discussed online.
However, scientific evidence supporting these methods is limited, and they may irritate sensitive underarm skin. Because the armpit is prone to friction and moisture, irritation or chemical burns are possible with certain substances.
Before trying any home remedy, it is best to discuss it with a qualified healthcare professional.
Preventing Skin Tags
It is not always possible to prevent skin tags.
However, some healthy habits may help reduce factors associated with their development.
These include:
- Maintaining a healthy body weight
- Wearing breathable clothing
- Reducing excessive skin friction
- Managing chronic health conditions
- Keeping the skin clean and dry
- Using proper shaving techniques
While these steps cannot guarantee prevention, they may support overall skin health.
When Should You See a Doctor?
Although skin tags are usually harmless, certain changes should be evaluated promptly.
Schedule a medical appointment if a skin growth:
- Appears suddenly and grows rapidly
- Changes color significantly
- Becomes very painful
- Bleeds repeatedly without injury
- Develops an irregular shape
- Has uneven borders
- Produces persistent itching
- Drains fluid or pus
- Looks very different from your other skin growths
You should also seek medical advice if you are unsure whether the growth is actually a skin tag.
Frequently Asked Questions
Can deodorant cause skin tags?
There is no strong evidence that deodorants directly cause skin tags. However, irritation and friction in the underarm area may contribute to their development.
Are skin tags contagious?
No. Skin tags cannot spread from one person to another.
Do skin tags keep growing?
Some remain the same size for years, while others slowly enlarge over time.
Can children develop skin tags?
Yes, although they are much more common in adults.
Will skin tags disappear on their own?
Some may eventually fall off if their blood supply is interrupted, but most remain unless they are removed.
Final Thoughts
Skin tags in the armpit are common, benign skin growths that rarely pose a health risk. They often develop in areas where skin experiences frequent friction, making the underarms one of the most common locations. While they are generally painless and harmless, they can become irritated by shaving, clothing, or repeated rubbing.
If an armpit skin tag causes discomfort, cosmetic concerns, or uncertainty about its diagnosis, a healthcare professional can recommend safe removal options. Avoid attempting to remove skin tags yourself, as doing so may increase the risk of bleeding, infection, or scarring. Any skin growth that changes rapidly, bleeds without injury, or has an unusual appearance should be evaluated promptly to rule out other conditions.
By maintaining good skin care habits and seeking medical advice when needed, you can manage skin tags safely while protecting your overall skin health.