How can the dark area in the placenta disappear?

Nov 14, 2025 Source: Cainiu Health

Dr. Zhang Lu

Introduction

Measures for the disappearance of placental dark areas should be determined based on the underlying cause and size, and generally include strict bed rest, administration of fetal-preserving medications as prescribed, control of underlying medical conditions, regular ultrasound monitoring, and adjustment of dietary nutrition. Physical activity should be reduced; prolonged sitting or standing and strenuous movements should be avoided, with left lateral decubitus position preferred. Adequate rest can reduce uterine traction on the placenta and lower the risk of bleeding.

The disappearance of placental dark areas requires intervention based on their cause and size, generally including strict bed rest, using fetal-preserving medications as prescribed, controlling underlying diseases, regular ultrasound monitoring, and adjusting dietary nutrition. Specific measures are as follows:

1. Strict bed rest: Reduce physical activity and avoid prolonged sitting, standing, or strenuous movements; lie on your left side whenever possible. Adequate rest reduces uterine traction on the placenta, lowers the risk of bleeding, and creates a stable environment for the absorption of the dark area.

2. Use fetal-preserving medications as prescribed: If the dark area is caused by placental bleeding, take hemostatic and fetal-stabilizing medications as directed by your doctor. Regular medication helps control bleeding, promotes coagulation, reduces fluid accumulation, and supports the absorption of the dark area. Do not adjust the dosage without medical advice.

3. Control underlying medical conditions: If the dark area is associated with hypertension or diabetes, actively manage the primary condition. Stabilize health indicators through medication adjustment and lifestyle improvements to reduce vascular abnormalities affecting the placenta and prevent expansion of the dark area.

4. Regular ultrasound monitoring: Follow your doctor’s recommendations for periodic ultrasounds to monitor changes in the size and appearance of the dark area. Ongoing monitoring allows assessment of absorption progress. If the dark area enlarges or fluid increases, treatment can be adjusted promptly to avoid delays.

5. Adjust diet and nutrition: Eat more protein- and vitamin-rich foods such as lean meat, fish, and fresh vegetables and fruits; avoid spicy or irritating foods. A balanced diet enhances maternal immunity, improves placental circulation, and supports the absorption of the dark area.

Treatment of placental dark areas must strictly follow medical guidance—avoid unproven remedies. Seek immediate medical attention if you experience abdominal pain, vaginal bleeding, or other abnormalities. Maintain emotional stability; with proper scientific management, most dark areas can be absorbed without affecting fetal development.

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What causes slight bleeding in the third trimester of pregnancy without abdominal pain, and what should be done?

In late pregnancy, slight bleeding without abdominal pain may be caused by factors such as bloody show, cervical polyps, placenta previa, early placental abruption, or vaginitis. Symptoms can be managed through symptom observation, bed rest, medication, and medical monitoring. If bleeding increases or abdominal pain occurs, immediate medical attention is required. In late pregnancy, the cervix matures, and the fetal membranes near the internal cervical os may separate from the uterine wall.

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At what time of day is the HCG level highest?

From the perspective of HCG secretion mechanism, it is continuously secreted by placental trophoblastic cells, and the secretion process is relatively stable, without significant peak variations according to circadian rhythms as seen with certain other hormones. During daytime, when the body is active and metabolism functions normally, HCG levels remain relatively stable, with minimal variation in test results at different times, making it difficult to identify a single peak time.

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Why are there so few people with a posterior placenta?

It is not uncommon for embryos to implant on the posterior wall of the uterus; it is simply slightly less common compared to anterior wall implantation. The main reasons include anatomical features of the uterus, the random nature of embryo implantation, pelvic environmental factors, hormonal regulation, and history of prior uterine procedures. Both posterior and anterior wall implantations are considered normal. If abnormal symptoms such as abdominal pain or vaginal bleeding occur during pregnancy, prompt medical attention is recommended.

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Why does the stomach become hard after slight movement at 27 weeks of pregnancy, and what should be done?

In general, during the 27th week of pregnancy, slight physical activity causing the abdomen to feel hard may be due to false labor contractions (Braxton Hicks contractions), uterine enlargement stretching ligaments, preterm labor signs, placental abruption, or red degeneration of uterine fibroids. Depending on the specific situation, improvements can be achieved through general management, medication, or surgical treatment. Pregnant women should avoid strenuous exercise and walk within their limits. Regular prenatal checkups are essential to monitor uterine and fetal conditions.