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What is HG?
Hyperemesis Gravidarum is a serious pregnancy complication — not bad morning sickness. Here is what every patient and partner should know.
HG vs morning sickness
- • Vomiting more than 3–4 times per day, often unable to keep fluids down.
- • Weight loss of 5% or more from pre-pregnancy baseline.
- • Signs of dehydration: ketones, dark urine, dizziness, racing heart.
- • Symptoms that don't resolve by 14–16 weeks and may last the whole pregnancy.
- • Major impact on daily function, work, and mental health.
When to go to the ER
- • Cannot keep down any fluids for 12+ hours.
- • Vomiting blood or bile, or signs of severe dehydration.
- • Confusion, double vision, or trouble walking (possible Wernicke's — needs IV thiamine).
- • Weight loss of 10%+ from pre-pregnancy.
- • Thoughts of ending the pregnancy because of symptoms — call your OB today.
Bring this to your provider
- • Your HELP Score or PUQE-24.
- • Pre-pregnancy weight and current weight.
- • Number of vomiting episodes per day and how long they have lasted.
- • Every medication tried, dose, and whether it helped.
- • The treatment protocol so you can ask about the next step.
Educational content adapted from HER Foundation guidance. Not medical advice.