Pregnancy

Morning Sickness: Complete Guide

Morning sickness affects up to 80% of pregnancies. While usually manageable, severe cases (hyperemesis gravidarum) require medical treatment to prevent dehydration and complications.

Prevalence
70-80% of pregnancies
Peak weeks
6-12 weeks
Usually resolves by
14-16 weeks
Severe form
Hyperemesis gravidarum (1-3%)

Normal Morning Sickness vs Hyperemesis Gravidarum

FeatureNormalHyperemesis Gravidarum
VomitingOccasional, manageablePersistent, unable to keep fluids down
WeightStable or minor lossSignificant weight loss (>5%)
HydrationMaintainedSigns of dehydration
Daily functionManageableUnable to work or care for self
TreatmentDietary/lifestyle measuresOften requires hospital admission for IV fluids

Dietary and Lifestyle Tips

Medical Treatment Options

TreatmentUse
Vitamin B6 (pyridoxine)First-line, safe in pregnancy
Antihistamines (cyclizine, promethazine)Safe and effective for moderate symptoms
OndansetronUsed for more severe cases; some historical safety debate, now considered generally safe
IV fluids and anti-emeticsHospital treatment for hyperemesis gravidarum
Signs You Need Urgent AssessmentUnable to keep any fluids down for 24 hours, signs of dehydration (dizziness, dark urine, reduced urination), weight loss, or feeling extremely unwell — hyperemesis gravidarum requires prompt medical treatment to protect both mother and baby.
It's Not 'Just' Morning SicknessHyperemesis gravidarum is a recognised medical condition (famously experienced by the Duchess of Cambridge) that can cause serious complications if untreated. It is not a sign of weakness or exaggeration — seek help without guilt.
Does severe morning sickness mean something is wrong with the baby?
No — in fact, some studies suggest morning sickness is associated with a slightly lower risk of miscarriage. However, severe hyperemesis needs treatment regardless.
Is it safe to take anti-sickness tablets in pregnancy?
Yes — several anti-emetic medications have good safety data in pregnancy. Your midwife or GP can prescribe appropriate options; don't suffer in silence.
When does morning sickness usually stop?
Most women see significant improvement by 14-16 weeks, though a minority experience symptoms throughout pregnancy.
Medical Disclaimer: This page is for general education only and does not replace professional medical advice. Always consult a qualified healthcare provider.