Does hyperemesis gravidarum cause morning sickness?

Most people with hyperemesis gravidarum notice morning sickness. Hyperemesis gravidarum is a severe pregnancy-related pattern of nausea and vomiting that can make it difficult to keep fluids or food down and can interfere with daily activities. Morning sickness is a broad symptom, and its severity varies widely.

The distinction depends on the overall pattern, including how often you vomit, whether you can drink, urine changes, weight change, and signs of dehydration. A healthcare professional may also consider other causes of vomiting during pregnancy.

Take small, frequent sips of fluid and try bland foods in small amounts if you can tolerate them. Rest, avoid triggers such as strong smells, and keep a record of what you drink, vomit, and pass as urine. Do not start anti-sickness medicines, supplements, or herbal products without checking that they are suitable in pregnancy.

Contact your maternity team or clinician if vomiting is stopping you from keeping fluids down, eating, taking prescribed medicines, or carrying out normal activities. They can assess hydration and discuss pregnancy-suitable treatment.

Seek prompt medical assessment if you cannot keep liquids down, pass very little or dark urine, feel dizzy or faint when standing, have a racing heartbeat, become unusually weak or confused, or notice blood in vomit. These can signal dehydration or another problem needing treatment.

Go to urgent care for fainting, severe abdominal pain, fever, chest pain, breathing difficulty, or vomiting with marked deterioration. Do not wait for a routine pregnancy appointment when you are unable to hydrate.

Ask: Could my vomiting be hyperemesis gravidarum? How can I monitor hydration at home? Which fluids and foods should I try? Which anti-sickness treatments are suitable? When should I attend hospital, and who should I contact outside clinic hours?