Hyperemesis gravidarum (HG) is a severe form of pregnancy sickness which can start early in pregnancy and last for months.

Last updated: 17 March 2021

Symptoms of severe pregnancy sickness

Symptoms of hyperemesis gravidarum include extreme levels of nausea and vomiting, which can cause dehydration.

Find out more about severe vomiting in pregnancy.

Treatment for severe pregnancy sickness

If you have severe pregnancy sickness and are not getting better with medicine, you will be admitted to Gloucestershire Royal Hospital.

You will usually be treated as a day case in the gynaecology outpatients Women's Centre at Gloucestershire Royal Hospital, but you may need to stay overnight.

The day unit offers rapid IV rehydration in recliner chairs, which should allow you to go home the same day. Treatment is offered from 8.30am to 3pm Monday to Friday and benefits include:

  • no delays in starting treatment, as you will not have to wait for a bed
  • a quiet, comfortable area with recliner chairs
  • advice on how to manage your symptoms from dedicated nursing staff
  • treatment can be planned in advance, so you can arrange it around other commitments

You can find out more information about severe pregnancy sickness on the Pregnancy Sickness Support website.