What causes skin tags to form? Do skin tags spread?

Why do skin tags develop?

There was a small lump in my neck, and it feels like it's gradually growing.

When a skin tag appears, people say it spreads, and you should remove it quickly once it appears. Everyone who sees it gets very anxious.

Will a skin tag really spread if I don't remove it?

I'm wondering if it's spreading sideways like a wart. ㅠ

They say that once a person is born, they will be born again even if you exclude them. Sob sob.

Can I think of removing a skin tag at the dermatology clinic as just like removing a mole?

Applying anesthetic cream and using laser to zap zap zap? Will the skin tags disappear?? Will the wound heal??

Is that the correct way to treat it??