Hyperemesis gravidarum (HG) is severe nausea and vomiting during pregnancy that can lead to dehydration and weight loss. It is far more intense than usual morning sickness and often needs hospital treatment.
Around 8 in 10 pregnant women have some nausea and vomiting in pregnancy. HG is much rarer, affecting roughly 1 to 3 in every 100. People with HG may be sick many times a day and be unable to keep food or drink down, which affects daily life.
Warning signs include vomiting many times a day, dark urine or not peeing for more than 8 hours, feeling dizzy or faint when standing, and losing weight. Anyone who cannot keep fluids down should contact their midwife, doctor or hospital as soon as possible, because dehydration needs prompt treatment.
Treatment may include anti-sickness medicines that are considered safe in pregnancy, and fluids given through a drip in hospital. Symptoms often ease by the middle of pregnancy, but for some they last longer. HG can also affect mental health, and talking to a GP or midwife about emotional support is a good step.
HG can make commuting, fixed hours and long meetings very hard. Sick leave, remote work, flexible hours, a nearby toilet and a place to rest can make a real difference.
Sources: NHS, MedlinePlus, ACOG.