Nausea causes

Nausea can be viral, reflux, migraine, medication, or pregnancy-related. A provider can prescribe anti-nausea medication and identify the cause online.

Also called: what causes nausea · constant nausea · feeling sick to stomach

Medically reviewed by Dr. Ikechukwu Ogbu, MD
MD · Board-Certified, Internal Medicine · Last reviewed

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Seek urgent care or the ER if you have:

  • Symptoms that are sudden, severe, or rapidly worsening
  • High fever (over 103°F / 39.4°C) that doesn't respond to treatment
  • Chest pain, trouble breathing, fainting, or confusion
  • Signs of dehydration — dizziness, dark urine, unable to keep fluids down
  • Symptoms in someone who is pregnant, immunocompromised, or over 65

What nausea causes could be

The most common causes a clinician considers. This isn't a diagnosis — it's the differential a provider works through with you.

Nausea and vomiting

Nausea and vomiting is one of the more common causes of nausea causes. Ondoc can evaluate it online.

Gastroenteritis / stomach flu

Gastroenteritis / stomach flu is one of the more common causes of nausea causes. Ondoc can evaluate it online.

GERD / acid reflux

GERD / acid reflux is one of the more common causes of nausea causes. Ondoc can evaluate it online.

Dr. Ikechukwu Ogbu, MD — Medical Director
Dr. Ikechukwu Ogbu, MD

Board-Certified · Internal Medicine · Medical Director

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