Small, soft growths that appear on the neck, underarms, or groin are often skin tags (acrochordons, also commonly called soft fibromas). They are typically benign skin growths, are not contagious, and usually do not require immediate treatment.
However, not every small fleshy bump is a skin tag. Warts, seborrheic keratoses, and occasionally other skin lesions can look similar. If many appear suddenly, if a growth repeatedly bleeds from friction, or if you are unsure what it is, you should have a physician examine it rather than cutting it off yourself or applying unverified removal products.
Key Takeaways: Skin tags most often develop where skin rubs against skin or where clothing and jewelry repeatedly chafe. They feel soft and often hang from a thin stalk. Most are harmless, though a dermatologist can evaluate them for removal if they become irritated by friction, bleed, or bother you cosmetically. Do not cut them off yourself or use home removal products, as this can cause infection, bleeding, scarring, or lead to mistaking another lesion for a skin tag. Seeing a doctor for clarification is also recommended if a large number appear over a short period.
What Are Skin Tags and Where Do They Grow?
Skin tags are common, small, soft skin growths. They may be flesh-colored, slightly darker, or pinkish; some hang from a thin stalk, while others are more closely attached to the skin. Most measure only a few millimeters across, though a few can grow larger.
Common sites include areas prone to friction, such as neck folds, the underarms, beneath the breasts, the groin, the eyelids, and the inner thighs. They can also appear on the flanks, abdomen, or back. They are neither contagious nor precancerous.
Many people develop skin tags as they age. Clinically, they are more frequently observed in individuals with obesity, pregnancy, looser skin, diabetes, or metabolic syndrome. Having family members with skin tags may also increase the likelihood of developing them. However, these associated factors do not mean that every skin tag signals an underlying systemic disease, nor do they mean that only people with larger body types get them.
Skin tags themselves usually cause no noticeable symptoms. Discomfort typically happens when they are repeatedly snagged by necklaces, collars, seatbelts, or razors, leading to redness, swelling, stinging, or bleeding.
Why Do They Form? Should They Always Be Seen as a Warning Sign of Cancer?
The exact mechanism remains unclear. Factors most commonly cited include long-term skin-on-skin friction, repeated irritation from clothing or jewelry, and warm, moist local environments. Changes in growth-related signals during pregnancy may also make some people more prone to developing them.
Most skin tags are benign in themselves and do not increase the risk of skin cancer. Older information often linked having many small growths on the neck directly to genetic abnormalities or various cancers, which can easily cause unnecessary panic; for ordinary skin tags, such conclusions are inappropriate.
There are still a few situations that warrant closer attention: if many new skin-tag-like lesions erupt suddenly over a short time, or if they are accompanied by other unusual skin changes or a significant family history of tumors, a physician will first confirm whether the growths are truly skin tags and, if necessary, recommend further health evaluation. This applies only to rare cases that need clarification—it does not mean ordinary small growths should all be treated as a sign of cancer, nor should you jump to conclusions on your own.
How Can You Tell Them Apart from Warts, Age Spots, or Moles?
Self-diagnosing based solely on photos or how soft a bump feels is unreliable. The table below outlines common differences to help you describe the lesion to your doctor, not as a checklist for self-diagnosis.
| Condition to Distinguish | Possible Clues | Limitations in Assessment |
|---|---|---|
| Skin tag (acrochordon) | Soft, often has a thin stalk, commonly found in skin folds or friction areas | Appearance varies widely and can still resemble other lesions |
| Viral wart | Surface is often firmer and rough; caused by a viral infection | Requires a physician’s evaluation when location and appearance overlap |
| Seborrheic keratosis (often called age spots) | Surface may look waxy or rough with a “stuck-on” appearance | Color and elevation vary; see guide to age spots / seborrheic keratosis |
| Mole (nevus) | Color, border, and symmetry are key points of evaluation | Changing pigmented lesions require separate examination; see mole self-exam and warning signs |
If a lesion grows rapidly, develops uneven colors, bleeds persistently, forms a crust that does not heal, or if you are simply unsure whether it is a skin tag, please visit a dermatology clinic for an examination. When necessary, the physician will arrange a biopsy to rule out other skin conditions.
How Should You Care for Them Daily, and What Should You Avoid Doing Yourself?
When skin tags cause no discomfort and are not a cosmetic concern, most can simply be observed without special treatment. Reducing repeated local friction can sometimes help minimize irritation: choose looser collars or jewelry, avoid raised growths when shaving, and watch for redness, swelling, or bleeding in areas rubbed by seatbelts or necklaces.
Do not try to remove them yourself using scissors, tied thread, heat, or unverified home removal products. These methods can cause infection, bleeding, and scarring, and some people delay proper evaluation by mistaking another type of lesion for a skin tag. Over-the-counter wart removal products are also unsuitable for treating skin tags on your own; because skin tags are soft, such harsh irritation can cause even greater damage to the surrounding skin.
If a skin tag is repeatedly chafed, painful, bleeding, or located near the eyelid where it affects your vision, have a physician treat it rather than trying to fix complications after a home attempt. There is also no need to undergo various unassessed tests beforehand—the most sensible approach is to have a physician examine the lesion clearly first and then decide on the next step.
When Should You See a Doctor, and How Might a Physician Treat Them?
Seeing a doctor is recommended if the diagnosis is uncertain, if many growths appear over a short period, if a growth repeatedly bleeds or hurts from irritation, if it interferes with vision or daily life, or if cosmetic changes prompt you to explore removal options. A physician will usually make an assessment based on your medical history and the lesion’s appearance; further testing is considered only in the few cases where the appearance is atypical.
If removal is chosen, common in-office procedures include snipping or scraping the lesion off with sterile instruments, cryotherapy (freezing), or using thermal energy to destroy the tissue and help stop bleeding. Which method is selected depends on the size, location, and condition of your skin. Not everyone is suited to the same approach, and removal does not guarantee there will be no trace left behind or that new skin tags will never form in the future.
After removal, follow care instructions for the treated area, keeping it clean and watching for signs of infection. Even though an individual skin tag rarely grows back in the exact same spot once completely removed, new skin tags can still develop over time in other friction-prone areas of the body—this is not the same as an incomplete removal. Whether to treat multiple growths at once and how to reduce local friction can both be discussed during your visit.
Health Education References
- American Academy of Dermatology: Skin tags
- American Academy of Dermatology: Mole and skin tag removal
- DermNet: Skin tag
- Cleveland Clinic: Skin Tags (Acrochordons)
Frequently Asked Questions About Skin Tags
Can skin tags turn into skin cancer?
What are commonly called skin tags are benign growths and typically do not become malignant. The real concern is other lesions that look like skin tags but are not. If a growth looks unusual, changes rapidly, or bleeds persistently, have a physician check it.
Are skin tags contagious to family members?
Skin tags are not an infectious condition and do not spread through contact the way viral warts do. When multiple family members have them, it is usually related to predisposition, age, or similar friction triggers rather than spreading from person to person.
Can I cut a skin tag off myself or use a home removal product?
This is not recommended. Removing it yourself can cause infection, bleeding, and scarring, and may inadvertently injure a different type of lesion. If removal is needed, have it evaluated and performed by a medical professional.
If many small growths suddenly appear on my neck, does it mean something is wrong with my genes?
Common skin tags should not be directly equated with genetic abnormalities or cancer warning signs. However, if a large number appear over a short period, seeing a doctor to confirm the diagnosis is still recommended; the physician can then evaluate whether any other health factors need follow-up, rather than you ordering unguided tests or panicking on your own.
Will skin tags grow back after removal?
Once a single skin tag is completely removed, it rarely grows back in the same spot; however, new skin tags can still form in other areas due to friction and other factors. You can discuss your individual situation with your physician regarding how to reduce irritation and whether treatment is needed.
This article provides general patient education and cannot replace an in-person medical consultation. Please consult a qualified physician for individual diagnosis and treatment.