Understanding Skin Tags: Causes and When to Seek Help
Skin tags are small, soft growths that hang off the skin. They are usually flesh-colored or slightly darker and can appear almost anywhere on the body. Although they may look unusual, skin tags are extremely common and generally harmless. Many people first notice them in adulthood, often wondering why they seemed to appear “overnight.”
Dermatologists note that skin tags rarely develop for a single reason. Instead, they usually form due to a combination of physical, hormonal, and genetic factors. Understanding these causes can help explain why they appear and when they may become more noticeable.
1. Skin Friction
One of the most common causes of skin tags is friction. When skin repeatedly rubs against other skin or clothing, small growths can develop over time. This is why skin tags often appear in areas such as the neck, underarms, groin, or under the breasts.
Repeated irritation can stimulate skin cells to grow outward, forming the small, soft projections we call skin tags. People with natural skin folds or who wear tight clothing may be more prone to developing them.
2. Aging
Skin tags become more common with age. While they can appear at almost any age, many adults first notice them in their 40s or 50s.
As the skin ages, its structure changes, making it more prone to small benign growths. Collagen and elastin fibers shift over time, and the skin may respond differently to friction or minor irritation, increasing the likelihood of skin tag formation.
3. Hormonal Changes
Hormonal fluctuations can also contribute to skin tag development. Many women notice new skin tags during pregnancy when hormone levels change significantly.
Hormones influence how skin cells grow and repair themselves. When hormone levels fluctuate, the skin may respond by forming small growths in areas prone to friction. These skin tags are usually harmless and may stop appearing once hormone levels stabilize.
4. Being Overweight
People carrying extra body weight may develop skin tags more frequently, partly because additional skin folds increase friction between skin surfaces.
Greater friction raises the chance of small skin growths forming. Common areas include the neck, underarms, and inner thighs. Maintaining a healthy weight can reduce some of the factors contributing to skin tags, though it does not always prevent them entirely.
5. Insulin Resistance
Research suggests that skin tags may sometimes be linked to insulin resistance, a condition where the body has difficulty using insulin effectively, often associated with metabolic changes.
People who develop multiple skin tags, especially around the neck or underarms, may be advised by doctors to check their blood sugar levels. While skin tags themselves are not dangerous, their presence can occasionally indicate underlying metabolic issues.
6. Genetics
Genetics can also play a role. If your parents or close relatives have skin tags, you may be more likely to develop them too.
Some people have a genetic tendency toward these harmless growths. In such cases, skin tags may appear even without significant friction, weight changes, or hormonal shifts.
When to See a Dermatologist
Most skin tags are harmless and don’t require treatment. However, consult a dermatologist if a growth changes color, grows quickly, becomes painful, or starts bleeding.
A medical professional can confirm whether a growth is a skin tag or another type of skin condition and recommend safe removal options if necessary.
In most cases, skin tags are a normal part of how skin changes over time. While they may appear suddenly, they usually result from everyday factors like friction, hormones, and genetics. Understanding these causes can make skin tags less mysterious — and much less worrying.
