How come when I rub my nipples my body feels weird and uncomfortable?

When i say weird and uncomfortable i don’t mean emotionally i mean physically and it’s not sad nipple syndrome. But i can feel my armpits start to sweat a little and it kind of hurts (not super painful but moreso uncomfortable) and it tingles some. It only stops if i scratch under my arms. Why does this happen and is it normal?

How come when I rub my nipples my body feels weird and uncomfortable?
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