why do skin tags form

Skin tags form primarily due to friction where skin rubs against skin or clothing. This friction stimulates excess growth of loose collagen fibers and blood vessels, leading to the formation of these small benign skin growths, often found in areas like the neck, armpits, groin, and under the breasts. Other contributing factors include aging, genetics, obesity (which increases skin folds and friction), hormonal changes (such as during pregnancy), and certain metabolic conditions like diabetes and insulin resistance. There is also some evidence suggesting a possible link with human papillomavirus (HPV), although this is less certain. Overall, skin tags are harmless and tend to develop more frequently with age and in individuals with risk factors related to skin friction and metabolic health.