The darkening of the neck in pregnancy is generally a normal physiological phenomenon, usually caused by an increase in estrogen or ultraviolet radiation.
1. The increase of estrogen: after pregnancy, the female body pituitary gland secretion of melanocyte hormone increase, increased estrogen and progesterone have melanocyte stimulation effect, so that melanin increases, resulting in pregnant women nipple, areola, abdominal white line, vulva and other places appear pigmentation, it becomes black.
In addition, the zygomatic cheeks of pregnant women and involve the periorbital area, forehead, upper lip and nose will also be affected by this, appearing into butterfly-like color spots, known as chloasma of pregnancy, which can subside on its own after delivery.
2. Stimulation by ultraviolet rays: When pregnant mothers-to-be go out, if they don’t have good sun protection measures, the ultraviolet rays in the sunlight will stimulate the melanin in the skin and make the skin become dark.
Pregnant women with black neck and discomfort, please consult a doctor in a timely manner, improve the examination to clarify the cause of the disease, and promptly comply with the doctor’s instructions for symptomatic treatment.