A mole can drain in the event that it gets captured on something and is torn. While this can hurt, it isn't normally anything to stress over. In uncommon cases, a mole seeps for no evident reason, and this can be an indication of skin growth.
Usually for grown-ups to have somewhere in the range of 10 and 40 moles. Individuals with lighter skin have a tendency to have a larger number of moles than those with darker skin.
Moles can change as a...