What is hyperemesis gravidarum?
The condition causes almost constant nausea and excessive vomiting that means you are often unable to keep down enough food to keep you nourished and hydrated, or cope with everyday tasks. No one knows precisely what causes it – but it's likely to be hormonal changes to which some women are more sensitive than others.
It affects between 1% and 3% of pregnant women and while it usually causes no harm to the unborn baby, it can be dangerous for mothers – so it's very important to seek help if you are suffering.
You may be more predisposed to getting hyperemesis if:
You had it in a previous pregnancy
You're having twins or more
You're having a girl
Your mother or sister had it
You're usually prone to migraines and/or travel sickness
You experienced sickness when on the oestrogen contraceptive pill
You're a younger mum
You are overweight
How is hyperemesis different from morning sickness?
In short, it is much more severe. Don't be fooled – morning sickness can be absolutely horrendous – but hyperemesis is on another level. It's not always clear in the early weeks of pregnancy whether you have just a very bad case of morning sickness or HG, but here are some of the symptoms that might tell you it's hyperemesis you are suffering from:
You've lost more than just a little weight (anything more than 5% of your pre-pregnancy weight
The vomiting and nausea is meaning you aren't able to get enough food each day (rather than just at certain times, or it being certain foods or smells that cause it)
The nausea is constant rather than coming and going
You vomit bile, or blood caused by repeated vomiting that creates tears in the gullet (if the blood is brown and looks like coffee grounds rather than red it should be looked into immediately as that's old blood and can indicate a bleed further down than the gullet)
You have signs of dehydration (dry mouth and skin, dark urine, dizziness)
The sickness doesn't ease at all after the first trimester
You're unable to work for weeks or even months (as opposed to the odd day or two, here and there)
When does hyperemesis start, and how long does it last?
It usually kicks in between weeks four and seven. If your sickness starts after week 12, it's probably due to something entirely different.
The bad news is, unlike “bog standard” morning sickness, hyperemesis lasts beyond the first trimester, often until around 15 weeks, sometimes up to 21 weeks, and, for an unfortunate few, for the entire pregnancy. It is a case of finding ways to cope with it in the long term, but there is lots of help and support out there.
When should I see a doctor about pregnancy sickness?
If you suspect you have hyperemesis gravidarum rather than ordinary morning sickness, see someone as soon as possible. The earlier you get treatment, the more likely it is to work.
If your GP refuses to prescribe you antiemetics, ask to see another GP and ask them for a referral to an obstetrician. Find out whether your local hospital has an early pregnancy unit – they will know if you can self-refer and be admitted directly on to a gynaecology ward, rather than having to go through A&E if you're dehydrated.
Hyperemesis treatment
Traditional remedies for morning sickness don't work for hyperemesis gravidarum. It's essential you get antiemetic medication from your GP or via a maternity assessment unit as soon as possible. There are a number of antiemetic (anti-sickness) drugs your GP can prescribe.
Initially, you may be advised to use anti-nausea strategies similar to the general advice given to any pregnant woman (nibbling on ginger biscuits, sipping peppermint tea and the like). These may help in the early stages of hyperemesis, but Mumsnetters say they become ineffective once hyperemesis is in full swing.
As well as antiemetics, your GP may also prescribe vitamins (B6 and B12) or steroids, or a combination of those. If you can't keep anything down at all, you might be admitted to hospital to be put on a drip, to replace lost fluids and nutrients, and given drugs to minimise the vomiting. If there are ketones in your urine, you may need extra minerals, and these can be added to your drip. You may be advised to keep an eye on your ketones by using ketone sticks, available from pharmacies.
“To anyone in the early stages, or not yet 'diagnosed' please, please seek medical attention now. Fight for medication, or get others to do so on your behalf if you are too ill (as I was). The longer you leave it, the worse it gets. Proper medication can help you function better. I wish I had not left it for so long.”
What are the possible complications of hyperemesis?
The dehydration, vomiting and malnutrition caused by HG can lead to a number of associated problems such as:
Constipation
Headaches
Cracked lips
Mouth sores
Acid reflux
Heartburn
Tooth enamel erosion
Sleep disorder
Vitamin and mineral deficiency
Excessive salivation
A tear in the oesophagus
Bed sores (due to having to rest so much)
Incontinence (caused by softening of the ligaments in pregnancy and vomiting frequently)
Depression
Anxiety
Increased risk of blood clots due to dehydration and being immobile (there are drugs available to reduce this risk)
Will hyperemesis affect my baby?
Babies born to women who have endured hyperemesis are generally absolutely fine. So, difficult as it can be to believe that something which is making you feel so wretched isn't harming your baby, you shouldn't worry.
The NHS says that if you experience weight loss during pregnancy, then there's an increased risk (but only a risk) that your baby may be born with a low birth weight.
Can hyperemesis cause miscarriage?
It is extremely unlikely and not something to worry about. With treatment, both you and your baby will be fine. If you happen to have a miscarriage, it is very unlikely to have anything to do with the sickness.
Your body is naturally predisposed to take everything it needs from you for the baby, leaving you feeling even more wretched, but safeguarding the baby's health and growth. That might not sound like great news to you, but it is definitely the best option.