Many things: This can be caused by breast stimulation from clothing or sexual encounters. It could be caused by a hormonal imbalance. Or it could be something as serious as a tumor. You should see a doctor and discuss this.
Answered 9/28/2016
4.1k views
A doctor has provided 1 answer
6 doctors weighed in across 2 answers
A doctor has provided 1 answer
A doctor has provided 1 answer
A doctor has provided 1 answer
90,000 U.S. doctors in 147 specialties are here to answer your questions or offer you advice, prescriptions, and more.
Ask your question