Small bumps on the neck after pregnancy are caused by the change of hormone level in the body, and most of them will gradually reduce and disappear after delivery. After pregnancy, due to the increase of estrogen level or the change of the ratio of estrogen to androgen, small bumps on the skin of pregnant women may be fibroids or dermatomes, which do not cause pain and do not have itchy symptoms. Do not scratch excessively during pregnancy, it will not affect your health and there is no need for special treatment, and then treat large skin bumps after delivery.