Cold, rough clothing rubbing, sexual arousal, menstruation can all cause swollen nipples. So can pregnancy,but this is usually accompanied by some sensation in the breasts, if only a tingling.
Swelling or polyps/tumors.
Its cold!
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depends if you want big nipples if you do just hook then up to a car battery if you are concernd about big nipples GET OVER IT!
causes by our sweat glands.
Arthritis causes pain, stiffness and swelling of joints.
what causes your nipples to be sore and tender and you aren't on your period? Thank you
Reading the covenant of genesis
Dehydration
carrying a cactus, usually.
allergic reaction
encephalitis.