Persistent and Recurrent Vomiting (Emesis) in Adults and Children

Vomiting, also known as emesis, is the process where the upper gastrointestinal contents are expelled through the mouth often with force. It is a coordinated process that starts from the small intestine or stomach. Since peristaltic waves pushes food from the mouth downwards into the esophagus and through the rest of the gut, the waves during vomiting “work” in the opposite direction.  This is known as antiperistalsis. It is coordinated by the vomiting center in the brain, often with input from another area known as the chemoreceptor trigger zone (CTZ).

Vomiting is not always a sign of an illness. It is actually a protective mechanism whereby the gut quickly expels noxious substances before it travels further down the gastrointestinal tract. Vomiting may be caused by overdistention of the gut or irritation of the gut lining which is not related to any disease. Upon expelling the causative agent, vomiting may cease. It is often preceded by nausea which may persist for a short while after vomiting but no other symptoms are usually present. However, when vomiting is persistent or recurrent, for just a few days or even weeks and months, it needs to be investigated further. It may be accompanied by other symptoms which would indicate a possible cause – for example, fever may be an indication of an infection.

Acute Vomiting

Most cases of vomiting are acute in nature. This means that it often comes on suddenly, may or may not be intense, and resolves in a short period of time. It is almost always preceded by nausea and there is often a clear etiology. In most instances, this is due to infectious agents as is the case with gastroenteritis or food poisoning. It is usually accompanied by diarrhea in these instances.

Pregnancy, excessive alcohol consumption, motion sickness and certain medication are other fairly common causes of acute vomiting. There are various other causes as discussed under sudden vomiting. Many of the same causes of acute vomiting may persist for long periods of time and account for chronic vomiting, either persistent or recurrent. In the absence of known chronic ailments or other concurrent symptoms, apart from dehydration associated with the vomiting, the diagnosis can be difficult and require extensive investigation.

Repeated Vomiting

Persistent Vomiting

Chronic vomiting may be persistent where it occurs frequently throughout the day and is often triggered by even small meals. In these instances, hydration has to be maintained with an IV drip and feeding may only be possible through a nasogastric tube. These are severe cases and in the elderly, a person with a serious chronic ailment or after severe trauma, this may not bode well for the prognosis if it does not resolve within a few days.

Recurrent Vomiting

More often, chronic vomiting presents as recurrent episodes. A person may have periods of no vomiting that may last anywhere from a few hours, days or even weeks and then episodes of vomiting return. The term cyclic vomiting syndrome is often used synonymously with recurrent vomiting. However it is a separate condition, with no known cause although there may be various triggers. It should therefore be considered as a condition on its own. Recurrent vomiting is at least three episodes of vomiting within a 3 month period that cannot be linked to common causes of acute vomiting, like food poisoning, gastroenteritis and so on. Nevertheless there is usually an underlying cause.

Causes of Chronic Vomiting

There are many causes of chronic vomiting but some of the more common of these have been discussed below. Vomiting, whether acute or chronic, should be assessed by a doctor. Further tests ad investigations may be necessary to reach a final diagnosis.


Chronic vomiting is most frequently seen in pregnancy as ‘morning sickness’ although it may occur anytime in the day or in the very severe form known as hyperemesis gravidarum. Vomiting can persist beyond the first trimester and is discussed further under vomiting during pregnancy. It should always be investigated when severe or persistent as it could be related to many non-obstetric causes.

Food Intolerance and Malabsorption

Intolerance to certain foods typically causes intestinal cramps and diarrhea although vomiting may occur in many cases. It arises a short while after consuming the causative foods and therefore in most cases the patient is able to clearly identify the trigger. Malabsorption is less likely to cause vomiting and diarrhea is a more common presentation but it should be considered as a possible cause.

Medication and Other Substance

Chronic medication or regular use of certain medication may cause nausea with or without vomiting. These adverse effects may be associated with the dosage, interactions with other drugs, taking medication without eating (’empty stomach’) or the concurrent intake of certain foods and beverages. Drug hypersensitivity may also be a contributing factor. It is more likely to occur in a person with gastritis, peptic ulcers, acid reflux and underlying gastrointestinal diseases. Medication may be missed as a possible cause as a person may not associate the vomiting with drug intake and may therefore fail to disclose this to the doctor.

Although many different types of medication can cause vomiting, it is chemotherapeutic agents that are known for these adverse effects. Most patients undergoing cancer therapy are informed accordingly and may experience nausea and vomiting along with other symptoms for periods of time after administration of the relevant agent.

Poisoning, either intentional or accidental, may also cause regular bouts of vomiting particularly when there is exposure to small amounts of the toxin over a long period of time. The small dose may not cause other symptoms and also be insufficient to cause any severe biochemical disturbance to warrant medical attention. The only feature of poisoning may therefore be vomiting.

Alcohol is another substance that may cause recurrent vomiting if ingested on a regular basis. This is more likely to occur with excessive consumption but may even arise with low intake in a person with underling gastrointestinal, pancreatic, kidney or liver disease. Episodes of vomiting usually occur a short time after alcohol ingestion and can last for a few hours to days. Alcoholics may experience vomiting as a withdrawal symptom upon discontinuing alcohol intake. In most cases it is limited to within the first few days of alcohol cessation.

Caffeine and other stimulants that may be found in certain energy drinks may also trigger nausea and/or vomiting. This is more likely to occur with underlying gastrointestinal conditions such as gastritis and peptic ulcer disease (PUD) since these substances may increase gastric acid secretion.


Cyclic Vomiting Syndrome

Cyclic vomiting syndrome (CVS) are cycles of symptomatic episodes marked by severe nausea and vomiting interspersed with asymptomatic periods. It more often occurs in children but may also affect adolescents and adults. The bouts of nausea and vomiting typically last a few days and can be severe enough to warrant hospitalization. Despite no clear underlying causes, CVS is often triggered by :

  • Infections
  • Emotional stress
  • Motion sickness
  • Fatigue
  • Menstruation
  • Hot weather
  • Certain foods
  • Colds, allergies or sinusitis

The term cyclic vomiting syndrome and abdominal migraines are often used interachangably. However, cyclic vomiting syndrome is characterized by nausea and vomiting although abdominal pain may be present in some cases whereas with abdominal migraines, pain in the abdomen is the characteristic feature although nausea and vomiting may also be present. Abdominal migraines is more often seen in children and there is usually a family history of migraine headaches.

Bowel Obstruction

Any obstruction in the alimentary tract may present with vomiting. Usually if the obstruction is within the esophagus or higher, regurgitation will be present. Obstruction from the stomach downwards is more likely to present with vomiting. A blockage in the stomach or small intestine tends to present as forceful violent vomiting. This is discussed in detail along with causes in adults in children under projectile vomiting. An obstruction in the large intestine is less likely to present with vomiting unless the intestinal contents are significantly backed up and there is subsequent irritation of the small intestine.


Chronic pancreatitis may present with vomiting over the long term along with other symptoms like weight loss, diarrhea and pale fatty stools. It is usually preceded by recurrent bouts of acute pancreatitis which presents with severe abdominal pain, nausea and vomiting. Read more on acute and chronic pancreatitis. Pancreatic cancer may also present with several of the features seen in chronic pancreatitis including vomiting.


Although many liver diseases may present with vomiting, the more common of these is hepatitis (inflammation of the liver). It is more frequently caused by a viral infection (viral hepatitis) although other systemic infections and autoimmune disorders may cause hepatitis. Jaundice and diarrhea is often present with the nausea ad vomiting.

Kidney Failure

Vomiting is more often seen with chronic kidney failure although nausea and vomiting may also occur with acute kidney failure. Hypertension and diabetes mellitus are the more common causes of kidney failure. Other features may include swelling, shortness of breath, decreased urine output, itchy skin and mental confusion.

Please note that any information or feedback on this website is not intended to replace a consultation with a health care professional and will not constitute a medical diagnosis. By using this website and the comment service you agree to abide by the comment terms and conditions as outlined on this page

Ask a Doctor Online Now!
  • Deb Fuller

    my grown son has bouts of vomiting, usually every 3 to 4 weeks….when this happens, he gets very weak….the vomit is bile looking….he also has bouts of profuse sweating….what could be causing this

    • Hi Deb. You don’t mention his age or anything else about his medical history or health status so we can only comment in a general manner. Recurrent vomiting like this can be due to a host of causes, ranging from medication or other substances he may be using to chronic infections and other diseases. There is also a possibility that this may not be related to the digestive system and could be arising with cardiac (heart) related conditions. He should see a doctor and possibly a gastroenterologist for further investigations and a diagnosis. There are so many possible causes that it would just be guessing right now without him undergoing thorough medical investigations.

  • Amy Ferris

    My daughter who is 10 keeps having bouts of vomiting. I initially thought it was a stomach bug however, it lasted for 10 days. Some days she wouldn’t vomit but felt sick and had a very little appetite. I would think she was getting better and then it would happen again. She has been well for a week but this morning has woke up and so far vomited 3 times. I have given get ice cubes to suck as she is thirsty. It’s very worrying and the Doctor didn’t seem to know why it’s happening.

    • Hi Amy. Vomiting is a symptom and there are many possible causes. One of the conditions that need to be considered is cyclic vomiting syndrome (CVS) if other possible causes have been excluded. This condition is more likely to occur in children and appears as bouts of unexplained vomiting that resolves for weeks only to recur again. Of course, there are other possibilities like a food allergy, stomach and bowel problems and so on. These conditions need to first be excluded before considering CVS so it would be advisable that you consult with a gastroenterologist at this point.

  • Doug C

    I’ve had issues with vomiting the past year. It started after taking Humira. About a month after taking Humira I started getting severe migraines with vomiting and dry heaving (retching) that would persist until I was sedated.
    I stopped the Humira in January of 2015 and the migraines have stopped, but now I have recurrent vomiting, about 2-4 times a week. It’s usually in the early evening before I go to work (I work nights). I’ll feel the need to vomit, will vomit a small amount usually no more than a mouthful and that’s it. I’ve vomited so much that it no longer bothers me and that’s not good. It doesn’t matter what/if/when I ate the vomit attack still happens.
    The only other medical condition I have is that I had my gallbladder removed three years ago. I would really like to quit vomiting so often.
    Any help would be awesome.

  • Jack N

    I have an issue where I’m continually vomiting into my mouth. It can happen from anywhere from once every couple of weeks to several times an hour. I never feel nauseous or have to deal with headaches / migrants with it and it’s been going on for almost a year now. Can you help me ?

    I’ve tried to deal with it by eating less to the point of not eating at all for a few days, though it still manages to find something. Also changing my diet multiple times, which still doesn’t seem to make much of a difference.

  • Speak the truth

    Let me start with my daughter had her gb removed on the 23rd and after she healed shenfelt a little bitter. Then she had another bout of nausea and vomiting. They admitted her for three days and she felt better and now she’s back to being sick again. Nausea vomiting pain in right abdominal area going into shoulder. Ct blood work and hide o scan negative. Plz help.

    • Hi Speak. The nausea, vomiting and abdominal pain radiating to right shoulder is very characteristic of gallbladder related conditions. The fact that she had it removed and is still experiencing these symptoms is a cause for concern. Obviously an infection would have been ruled out by now but there could be underlying problems like with the bile duct and surrounding structures. You may want to get a second opinion at this point from another gastroenterologist.