Yes it can. You need to see either a surgeon or OBGYN. This can also indicate changes in your breast tissue. You may need a mammogram.
Yes, a hormonal balance can cause breast milk.
Hormonal imbalances can be caused by a myriad of things. Chief amoung them pregnancy. Get thee to a doctor, if you are lactating and not pregnant!
(Out of curiosity, is a close friend or female relative pregnant? I've heard of the odd case of individuals spontaneously lactating when friends or family are pregnant!)
yes hormonal imbalance like prolactin cause breast milk.