What is the cause of bleeding from the baby's head when a pregnant mother is seen on ultrasound during pregnancy?

Bleeding from the baby's head during pregnancy can be caused by a number of factors, including:

1. Placental abruption: This occurs when the placenta partially or completely separates from the uterine wall before the baby is born, leading to bleeding and potentially serious complications for both the mother and baby.

2. Placenta previa: This condition occurs when the placenta partially or completely covers the cervix, leading to bleeding as the cervix begins to dilate during labor.

3. Fetal-maternal hemorrhage: This occurs when fetal blood enters the maternal circulation, leading to bleeding from the baby's head during pregnancy.

4. Trauma: In some cases, bleeding from the baby's head during pregnancy may be caused by trauma, such as a fall or car accident.

It is important for pregnant women experiencing bleeding from the baby's head during pregnancy to seek medical attention immediately, as it can be a sign of a serious complication that requires prompt treatment.

Placenta previa