Why do girls breasts appear milky when she is not pregnant?

The appearance of milky discharge from a woman's breasts when she is not pregnant can be due to a condition called galactorrhea. Galactorrhea is the spontaneous flow of milk from the breasts, which can be caused by a variety of factors including hormonal imbalances, certain medications, thyroid disorders, or even excessive stimulation of the breasts.

It is important for women experiencing milky discharge from their breasts to consult with a healthcare provider to determine the underlying cause and receive appropriate treatment.