Skin tags cluster on the neck more than almost anywhere else on the body, and having a lot of them usually points to a combination of friction, hormonal signals, and how your body processes insulin. They’re benign growths of skin and connective tissue, and by the time most people reach their 50s or 60s, roughly two-thirds will have at least one. But if you’re noticing many of them concentrated on your neck, there are specific reasons that area is a hotspot.
Friction Makes the Neck a Prime Location
The neck is one of the body’s highest-friction zones. Shirt collars, necklaces, scarves, lanyards, and even your own skin folds create constant low-grade rubbing throughout the day. That repeated mechanical irritation is a well-established trigger for skin tag formation. Tight clothing is a particularly common contributing factor. If you wear collared shirts for work five days a week or tend to layer necklaces, you’re giving those tags exactly the conditions they thrive in.
This is also why skin tags are so common in the armpits, under the breasts, and in the groin. Anywhere skin rubs against skin or fabric on a daily basis, tags are more likely to appear. The neck just happens to get both types of friction: skin-on-skin in the creases and fabric or jewelry contact across the surface.
Insulin Resistance Is the Biggest Metabolic Driver
If you have a large number of skin tags, your body may be telling you something important about your metabolic health. Insulin acts as a growth-promoting hormone, and when insulin levels stay elevated for long periods, skin cells and connective tissue can grow more rapidly than normal. High insulin also amplifies other growth factors in the body, increasing skin cell turnover and thickening. The result, over time, is excess little growths in the areas most prone to irritation.
The connection between skin tags and metabolic problems is strong enough to measure. Research published in the Journal of Investigative Dermatology found that the rate of metabolic syndrome (a cluster of conditions including high blood sugar, excess abdominal fat, and abnormal cholesterol) was 38.6% among people with skin tags, compared to just 15.8% in people without them. That translates to a three- to four-fold higher risk of metabolic syndrome if you have skin tags.
This doesn’t mean skin tags are a diagnosis of anything. But multiple skin tags, especially appearing in your 30s or 40s, can be an early visible clue that your body is becoming resistant to insulin, sometimes years before blood sugar levels rise enough to flag on a standard test. It’s worth paying attention to.
Dark, Velvety Patches Alongside Skin Tags
If you notice areas of dark, thickened skin on your neck in addition to the tags, that combination has a name: acanthosis nigricans. It typically shows up in body folds and creases, especially the neck, armpits, and groin. It’s driven by the same underlying insulin resistance and is closely linked to type 2 diabetes and polycystic ovarian syndrome. The darkened patches often develop skin tags within them. If you’re seeing both together, that’s a particularly strong signal to have your blood sugar and insulin levels checked.
Hormones and Life Stages
Hormonal shifts can trigger a wave of new skin tags. Pregnancy is the most common example. Estrogen receptors are present in skin cells, and the surge of estrogen during pregnancy can accelerate skin cell growth and lead to new tags appearing on the neck and elsewhere. Some women notice the same effect from hormonal birth control pills. These hormone-driven tags sometimes shrink or stop growing after pregnancy or after stopping the pill, though many persist.
Age is another factor that works alongside hormones. Skin tags become progressively more common with each decade of life, peaking around the 50s and 60s. Changes in growth hormone levels, cumulative sun exposure on the neck, and years of friction all compound over time.
Genetics Play a Role
If your parents or siblings have skin tags, you’re more likely to develop them too. Research has identified specific genetic variations in a gene called CDH1 that appear significantly more often in people with skin tags compared to those without them. These variations may affect how skin cells transition between different states of growth and behavior, essentially making it easier for small benign growths to form. So if you feel like you inherited your skin tags, you may be right.
A Possible Viral Connection
There’s also evidence that certain strains of human papillomavirus (HPV) may contribute to skin tag formation. A study that biopsied skin tags found HPV types 6 and 11 (low-risk strains, not the ones associated with cancer) in 71.4% of skin tag samples. Those same viral strains were present in only about 13% of normal skin samples from the same patients. The neck was the most common location for the biopsied tags, accounting for over 70% of samples. This doesn’t mean skin tags are contagious or dangerous, but it suggests that low-risk HPV infection in the skin may be one more factor that tips the balance toward tag formation in some people.
Weight and Body Composition
Carrying extra weight increases both friction and insulin resistance, making it one of the strongest overall risk factors for developing multiple skin tags. More body fat, particularly around the neck and torso, means more skin-on-skin contact and more mechanical irritation. At the same time, excess fat tissue contributes to higher circulating insulin levels. These two mechanisms reinforce each other, which is why weight loss often slows or stops the formation of new tags even if it doesn’t shrink existing ones.
When a Skin Tag Needs a Closer Look
Skin tags themselves are harmless. But not every small growth on your neck is necessarily a skin tag. Keep an eye out for any growth that changes color unevenly, has irregular or ragged borders, grows rapidly, bleeds without being snagged, or looks noticeably different from your other tags. These features overlap with the warning signs for skin cancer: asymmetry, irregular borders, varied color, a diameter larger than a pencil eraser, and any evolution in appearance over time. A growth that checks any of those boxes is worth having a dermatologist examine and potentially biopsy.
How Skin Tags Are Removed
If your neck tags snag on jewelry, get rubbed raw by collars, or simply bother you cosmetically, removal is straightforward. The most common in-office methods are freezing (using liquid nitrogen applied with a spray or cotton swab), burning with a small electrical device, or snipping with sterile scissors. All three are quick and typically done without significant anesthesia.
With freezing, the treated spot turns red and may blister, then forms a scab that heals within one to three weeks. Any mild pain generally fades within about three days. Snipping and burning heal on similar timelines. The procedures don’t prevent new tags from forming, though. If the underlying causes (friction, insulin levels, weight) remain unchanged, new tags will likely appear over time in the same areas.
Removing tags at home with string, nail clippers, or over-the-counter freezing kits carries a real risk of infection, scarring, and incomplete removal, especially on visible areas like the neck. A dermatologist or primary care provider can handle multiple tags in a single visit.