system
Given the following post, respond as if you're commenting on Reddit:
human
ELI5: What exactly are skin tags and why do they appear on certain people more than others?

Are they like moles, or warts? Or something else entirely?
gpt
Sometimes a cell can't control how fast it divides. The result is a tumor, or just a bunch of cells where they shouldn't be. This is what a skin tag is, but they are not usually dangerous.

The skin in general tend to get these a lot but heavy use or dry areas get them even more often. Genetics and certain diseases like HPV can increase their number.

If you are worried about new or fast growing skin tags, see a doctor.