? pregnancy: Pregnancy would be the number 1 cause. Multiple other cause. Some are benign, and some are serious. Below is a site with a list of possible causes. I'd see your physician to discuss this. http://www.mayoclinic.org/symptoms/nipple-discharge/basics/causes/sym-20050946
Answered 9/29/2016
3.7k views
Milky fluid: For a sexually mature girl, it is not uncommon to have milky discharge on breast stimulation as a sexual experience..
Answered 9/29/2016
3.7k views
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