Many pregnant women have some nausea and sometimes vomiting in the first trimester. A few pregnant women have a severe kind of nausea and vomiting called hyperemesis gravidarum. Read on to learn more about this condition.

Shingles (herpes zoster) is a painful skin rash. It’s caused by the varicella-zoster virus (VZV). This is the same virus that causes chickenpox.

A pregnancy that develops outside the uterus is called ectopic pregnancy. This nearly always happens in a fallopian tube. So it’s often called tubal pregnancy. Rarely, an ectopic pregnancy will happen in an ovary, in the cervix, or the belly (abdomen).

Detailed information on digestive and liver disorders during pregnancy

Doppler flow is a type of ultrasound. It uses sound waves to measure the flow of blood through a blood vessel. The results are shown on a computer screen in lines called waveforms. It’s sometimes called Doppler velocimetry. A Doppler flow study may be used during pregnancy to check the health of the unborn baby.

Reye syndrome is a rare but very serious illness that causes brain swelling and liver damage. It can also affect all the body’s organs.

Chorionic villus sampling (CVS) is a test done early in a woman’s pregnancy. CVS checks for genetic problems in your baby. During CVS, your healthcare provider takes a small piece of tissue from the placenta for testing.

Periventricular leukomalacia (PVL) is a softening of white brain tissue near the ventricles. The ventricles are fluid-filled chambers in the brain.

Chorioamnionitis [chor-y-oh-am-nee-oh-NY-tis] is an infection of the placenta and the amniotic fluid. Only a few women get it. But it is a common cause of preterm labor and delivery.

The most common symptoms of nervous system disorders in children include delays in developmental milestones, an increase or lack of growth in head size, and a lack of coordination.