There are many reasons for the growth of small grains on the areola during pregnancy, the common reasons are: 1, in the periphery of the areola there are monsoon glands, the body during pregnancy progesterone levels rise, the breast mammary glands on the breast will proliferate, development, areola color deepens, the sebaceous glands at the areola bulge like a small grain, not painful, not itchy this is a normal physiological phenomenon, no need for special treatment, and so on after the baby is born small grains will be reduced or disappear. 2, areola