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Constant Nausea and Vomiting

Dr. John Hsiang, Senior Consultant Gastroenterologist

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What Is Constant Nausea And Vomiting?

Constant nausea and vomiting, also known as recurrent emesis, is a medical condition characterized by persistent and unrelenting episodes of feeling sick to one’s stomach (nausea) and expelling the contents of the stomach through the mouth (vomiting).

This condition can occur for a variety of reasons, ranging from minor issues such as food poisoning or motion sickness to more serious underlying health conditions such as gastroenteritis or kidney disease.

What are the Symptoms of Constant Nausea And Vomiting?

Aside from the obvious symptoms of feeling sick and vomiting, there are other signs that may indicate a person is experiencing constant nausea and vomiting. These can include:

What is a Gastroscopy?

A Gastroscopy, also known as an Upper GI Endoscopy, is a procedure to examine the oesophagus (gullet), stomach, and duodenum (first part of the small intestine).

It is done by having a gastroscope safely inserted through the mouth and maneuvered by your Doctor.

A gastroscope is a flexible tube with a camera attached to it. This gives your Doctor an internal view of your upper digestive system to detect abnormalities such as polyps, ulcers, inflammation, or cancerous growths along the mucosal lining.

If your Doctor discovers these issues during an examination, they can remove any polyps or tissues to be sampled for further investigation.

What Are The Causes of Constant Nausea And Vomiting?

There are many potential causes of constant nausea and vomiting, making it difficult to pinpoint a single underlying reason. Some possible causes include:


  • Gastrointestinal issues: Conditions such as gastritis, gastroesophageal reflux disease (GERD), ulcers, and irritable bowel syndrome (IBS) can all cause chronic nausea and vomiting.
  • Pregnancy: Nausea and vomiting, commonly known as morning sickness, are common symptoms during pregnancy, particularly in the first trimester. However, if these symptoms persist throughout the entire pregnancy or become severe, it may be a sign of a more serious condition such as hyperemesis gravidarum.
  • Medications: Certain medications can cause nausea and vomiting as a side effect. These can include chemotherapy drugs, antibiotics, and painkillers.
  • Infections: Viral or bacterial infections, such as the stomach flu or food poisoning, can cause persistent nausea and vomiting.
  • Psychological Factors: Stress, anxiety, and depression can all contribute to a person experiencing constant nausea and vomiting.
  • Other medical conditions: Several other medical conditions can lead to recurrent emesis, including migraines, inner ear disorders, and hormonal imbalances.


It is important to consult with a healthcare professional if you are experiencing constant nausea and vomiting as they can help determine the underlying cause and provide proper treatment.

When Is It Time To Visit a Doctor?

While occasional nausea and vomiting are common and usually not a cause for concern, constant episodes of these symptoms can indicate an underlying medical issue that may require treatment.

It is important to visit a doctor if:

A doctor can help diagnose the underlying cause and provide appropriate treatment to manage the symptoms and improve overall health. In some cases, a referral to a specialist may be necessary for further evaluation and treatment.

What happens during your procedure

Usually, a Gastroscopy is done while you are asleep due to the sedatives that will be administered to you. An anesthetic will also be sprayed into your throat to numb your swallowing sensation.

You will be placed on your side and given to wear a mouth guard to prevent yourself from biting on the scope. With the necessary preparations in place, your Doctor will proceed with the gastroscopy examination.

The whole procedure should take about 10 to 15 minutes and you should be discharged within the same day. You will be advised not to drive or operate machinery for the day due to the drowsiness you may feel from the sedatives.

Why See a Gastro Doctor?

Consulting a Gastroenterologist for your symptoms helps in obtaining an accurate diagnosis, giving you peace of mind. It also aids in detecting and ruling out more serious diseases like ulcers and cancer.

At Richmond Gastro, our team ensures a smooth and comfortable consultation and diagnosis process, making endoscopy less daunting than you may think.

More Information

Treatment for constant nausea and vomiting depends on the underlying cause. Some common treatment options may include:

  • Medications: Anti-emetic medications can help reduce feelings of nausea and prevent vomiting.
  • Dietary changes: Avoiding trigger foods or sticking to a bland diet may help alleviate symptoms.
  • Hydration: Drinking plenty of fluids, especially water, can help prevent dehydration.
  • Stress management: Techniques such as deep breathing, meditation, or therapy may help reduce stress and alleviate symptoms.
  • Medical procedures: In some cases, medical procedures like endoscopy may be necessary to diagnose and treat underlying conditions.

It is important to follow the treatment plan recommended by your healthcare provider for the best results.

While treating the underlying cause of constant nausea and vomiting is essential, there are also some steps you can take to help relieve symptoms:

  • Get plenty of rest
  • Avoid strong odours or triggers that may worsen your nausea
  • Try sipping on clear liquids, such as water or herbal tea
  • Eat small, frequent meals instead of large meals
  • Ginger has been known to help alleviate nausea, so try ginger tea or candies
  • Acupressure wristbands may also provide relief for some individuals


It is important to consult with your doctor before trying any home remedies or alternative treatments.

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About Dr. John Hsiang

MBChB (NZ), FRACP (Australasia), MD (Doctorate), FRCP (Edinburgh), FAMS (Gastro)

Dr. John Hsiang is a Gastroenterologist and Hepatologist with more than 20 years of clinical experience in public and private practice.

Dr. John’s special clinical interests are in gastroesophageal reflux disease, stomach conditions, fatty liver, and gastrointestinal cancer screening

Dr. John has spent more than five years in the Singhealth cluster serving in the Gastroenterology Department at Changi General Hospital and Sengkang General Hospital.

Clinical interests:

Indigestion, gastroesophageal reflux disease, helicobacter pylori infection, irritable bowel syndrome, constipation, diarrhoea, hepatitis B, fatty liver disease, management of abnormal liver tests.

Dedicated Insurance Support

We understand that navigating the financial aspect of healthcare can be overwhelming. We welcome all patients with or without insurance and can assist with claims regardless of your personal or corporate insurance plan.

Here at Richmond Gastroenterology Centre, we strive to ensure the most efficient claims process for our patients. To that end, our team works diligently with their insurers to obtain Letters of Guarantee and pre-authorization certificates prior to any procedures.

Make an appointment to consult our Doctor.

We understand your anxieties and we are here to support you throughout your health journey. If you have questions or would like to seek a 2nd opinion, send us your message via the form below.

To get an immediate response, you may also call us at: 6517 9958

Dr. John Hsiang is an Accredited Specialist Across All Private Hospitals in Singapore.