Skin tags are small, soft growths that hang from the skin and are usually flesh-colored or slightly darker. They can appear on many parts of the body, most often in areas where skin naturally folds or rubs together, such as the neck, underarms, groin, or beneath the breasts. Although they may look unusual at first, dermatologists explain that skin tags are extremely common and typically harmless. Many people begin noticing them during adulthood and may feel as though they appeared suddenly. In reality, these growths usually develop gradually due to everyday factors. One of the most common causes is simple skin friction. When skin repeatedly rubs against clothing or other skin surfaces, the irritation can stimulate small clusters of cells to grow outward, forming a soft projection. Aging can also contribute to their appearance, as the skin’s structure changes over time and becomes more likely to develop small benign growths.

Other factors can also play a role in the formation of skin tags. Hormonal changes, for example, may lead to new skin tags during times such as pregnancy, when the body experiences significant shifts in hormone levels that influence how skin cells grow and repair themselves. Body weight can also contribute, as additional skin folds may increase friction in certain areas. Some research has suggested a possible connection between skin tags and insulin resistance, which is why doctors may sometimes recommend checking blood sugar levels if multiple growths appear in similar areas. Genetics may also influence whether someone develops skin tags, as they often run in families. In most cases, skin tags do not require treatment. However, if a growth changes in color, becomes painful, grows quickly, or begins to bleed, it is a good idea to consult a dermatologist. A medical professional can confirm the diagnosis and recommend safe options if removal is needed.