Nausea




For other uses, see Nausea (disambiguation).









Nausea
3205 - Milano, Duomo - Giorgio Bonola - Miracolo di Marco Spagnolo (1681) - Foto Giovanni Dall'Orto, 6-Dec-2007-cropped.jpg
A 1681 painting depicting a person vomiting
Specialty Gastroenterology

Nausea is an unpleasant, diffuse sensation of unease and discomfort, often perceived as an urge to vomit.[1] While not painful, it can be a debilitating symptom if prolonged, and has been described as placing discomfort on the chest, upper abdomen, or back of the throat.[2]


Like pain, the purpose of nausea is to discourage the person or animal from repeating whatever caused the unpleasantness. The memory of pain elicits safer or evasive actions; the memory of nausea elicits revulsion towards whatever was eaten before vomiting it up — even if it was not the cause of the nausea.[citation needed]


Nausea is a non-specific symptom, which means that it has many possible causes. Some common causes of nausea are gastroenteritis and other gastrointestinal disorders, food poisoning, motion sickness, dizziness, migraine, fainting and low blood sugar. Nausea is a side effect of many medications including chemotherapy, or morning sickness in early pregnancy. Nausea may also be caused by anxiety, disgust and depression.[1][3][4][5]


Medications taken to prevent and treat nausea are called antiemetics. The most commonly prescribed antiemetics in the US are promethazine, metoclopramide and the newer, extremely effective ondansetron. The word nausea is from Latin nausea, from Greek ναυσία – nausia,[6] "ναυτία" – nautia, motion sickness, "feeling sick or queasy".[7]


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Contents






  • 1 Causes


    • 1.1 Gastrointestinal


    • 1.2 Food poisoning


    • 1.3 Medications


    • 1.4 Pregnancy


    • 1.5 Disequilibrium


    • 1.6 Psychiatric


    • 1.7 Potentially serious


    • 1.8 Comprehensive list


      • 1.8.1 Inside the abdomen


      • 1.8.2 Outside the abdomen


      • 1.8.3 Medications and metabolic disorders






  • 2 Diagnostic approach


    • 2.1 Patient history


    • 2.2 Physical exam


    • 2.3 Diagnostic testing




  • 3 Pathophysiology


  • 4 Treatment


    • 4.1 Medications


    • 4.2 Alternative medicine




  • 5 Prognosis


  • 6 Epidemiology


  • 7 See also


  • 8 References


  • 9 External links





Causes


Gastrointestinal infections (37%) and food poisoning are the two most common causes of acute nausea and vomiting.[1] Side effects from medications (3%) and pregnancy are also relatively frequent.[1] There are many causes of chronic nausea.[1] Nausea and vomiting remain undiagnosed in 10% of the cases. Aside from morning sickness, there are no gender differences in complaints of nausea. After childhood, doctor consultations decrease steadily with age. Only a fraction of one percent of doctor visits by those over 65 are due to nausea.[8]



Gastrointestinal


Gastrointestinal infection is one of the most common causes of acute nausea and vomiting.[1] Chronic nausea may be the presentation of many gastrointestinal disorders, occasionally as the major symptom, such as gastroesophageal reflux disease, functional dyspepsia, gastroparesis, peptic ulcer, celiac disease, non-celiac gluten sensitivity, Crohn's disease, hepatitis, upper gastrointestinal malignancy, and pancreatic cancer.[1][9] Uncomplicated Helicobacter pylori infection does not cause chronic nausea.[1]



Food poisoning


Food poisoning usually causes an abrupt onset of nausea and vomiting one to six hours after ingestion of contaminated food and lasts for one to two days.[10] It is due to toxins produced by bacteria in food.[10]



Medications


Many medications can potentially cause nausea.[10] Some of the most frequently associated include cytotoxic chemotherapy regimens for cancer and other diseases, and general anaesthetic agents. An old cure for migraine, ergotamine, is well known to cause devastating nausea in some patients; a person using it for the first time will be prescribed an antiemetic for relief if needed.



Pregnancy


Nausea or "morning sickness" is common during early pregnancy but may occasionally continue into the second and third trimesters. In the first trimester nearly 80% of women have some degree of nausea.[11] Pregnancy should therefore be considered as a possible cause of nausea in any women of child bearing age.[10] While usually it is mild and self-limiting, severe cases known as hyperemesis gravidarum may require treatment.[12]



Disequilibrium


A number of conditions involving balance such as motion sickness and vertigo can lead to nausea and vomiting.



Psychiatric


Nausea may be caused by depression, anxiety disorders and eating disorders.[13]



Potentially serious


While most causes of nausea are not serious, some serious conditions are associated with nausea. These include: pancreatitis, small bowel obstruction, appendicitis, cholecystitis, hepatitis, Addisonian crisis, diabetic ketoacidosis, increased intracranial pressure, Spontaneous Intracranial Hypotension, brain tumors, meningitis, heart attack,[14]carbon monoxide poisoning and many others.[1]



Comprehensive list



Inside the abdomen


Obstructing disorders



  • Pyloric obstruction

  • Small bowel obstruction

  • Colonic obstruction

  • Superior mesenteric artery syndrome


Enteric infections



  • Viral infection

  • Bacterial infection


Inflammatory diseases



  • Celiac disease

  • Cholecystitis

  • Pancreatitis

  • Appendicitis

  • Hepatitis


Sensorimotor dysfunction



  • Gastroparesis

  • Intestinal pseudo-obstruction

  • Gastroesophageal reflux disease

  • Irritable bowel syndrome

  • Chronic idiopathic nausea

  • Functional vomiting

  • Cyclic vomiting syndrome


Other



  • Non-celiac gluten sensitivity

  • Biliary colic

  • Abdominal irradiation[15]



Outside the abdomen


Cardiopulmonary



  • Cardiomyopathy


  • Myocardial infarction (heart attack)


Inner-ear diseases



  • Motion sickness

  • Labyrinthitis

  • Malignancy


Intracerebral disorders



  • Malignancy

  • Hemorrhage

  • Abscess

  • Hydrocephalus

  • Meningitis

  • Encephalitis


Psychiatric illnesses




  • Anorexia and bulimia nervosa

  • Depression


Other


  • Post-operative vomiting[15]


Medications and metabolic disorders


Drugs



  • Chemotherapy

  • Antibiotics

  • Antiarrhythmics

  • Digoxin

  • Oral hypoglycemic medications

  • Oral contraceptives


Endocrine/metabolic disease



  • Pregnancy

  • Uremia

  • Ketoacidosis


  • Thyroid and parathyroid disease

  • Adrenal insufficiency


Toxins



  • Liver failure

  • Alcohol



Diagnostic approach



Patient history


Taking a thorough patient history may reveal important clues to the cause of nausea and vomiting. If the patient's symptoms have an acute onset, then drugs, toxins, and infections are likely. In contrast, a long-standing history of nausea will point towards a chronic illness as the culprit. The timing of nausea and vomiting after eating food is an important factor to pay attention to. Symptoms that occur within an hour of eating may indicate an obstruction proximal to the small intestine, such as gastroparesis or pyloric stenosis. An obstruction further down in the intestine or colon will cause delayed vomiting. An infectious cause of nausea and vomiting such as gastroenteritis may present several hours to days after the food was ingested.[15] The contents of the emesis is a valuable clue towards determining the cause. Bits of fecal matter in the emesis indicate obstruction in the distal intestine or the colon. Emesis that is of a bilious nature (greenish in color) localizes the obstruction to a point past the stomach. Emesis of undigested food points to an obstruction prior to the gastric outlet, such as achalasia or Zenker's diverticulum. If patient experiences reduced abdominal pain after vomiting, then obstruction is a likely etiology. However, vomiting does not relieve the pain brought on by pancreatitis or cholecystitis.[15]



Physical exam


It is important to watch out for signs of dehydration, such as orthostatic hypotension and loss of skin turgor. Auscultation of the abdomen can produce several clues to the cause of nausea and vomiting. A high-pitched tinkling sound indicates possible bowel obstruction, while a splashing "succussion" sound is more indicative of gastric outlet obstruction. Eliciting pain on the abdominal exam when pressing on the patient may indicate an inflammatory process. Signs such as papilledema, visual field losses, or focal neurological deficits are red flag signs for elevated intracranial pressure.[15]



Diagnostic testing


When a history and physical exam are not enough to determine the cause of nausea and vomiting, certain diagnostic tests may prove useful. A chemistry panel would be useful for electrolyte and metabolic abnormalities.[16] Liver function tests and lipase would identify pancreaticobiliary diseases.[16] Abdominal X-rays showing air-fluid levels indicate bowel obstruction, while an X-ray showing air-filled bowel loops are more indicative of ileus. More advanced imaging and procedures may be necessary, such as a CT scan, upper endoscopy, colonoscopy, barium enema, or MRI. Abnormal GI motility can be assessed using specific tests like gastric scintigraphy, wireless motility capsules, and small-intestinal manometry.[15]



Pathophysiology


Research on nausea and vomiting has relied on using animal models to mimic the anatomy and neuropharmacologic features of the human body.[17] The physiologic mechanism of nausea is a complex process that has yet to be fully elucidated. There are four general pathways that are activated by specific triggers in the human body that go on to create the sensation of nausea and vomiting.[18]




  • Central nervous system (CNS): Stimuli can affect areas of the CNS including the cerebral cortex and the limbic system. These areas are activated by elevated intracranial pressure, irritation of the meninges (i.e. blood or infection), and extreme emotional triggers such as anxiety.


  • Chemoreceptor trigger zone (CTZ): The CTZ is located in the area postrema in the floor of the fourth ventricle within the brain. This area is outside the blood brain barrier, and is therefore readily exposed to substances circulating through the blood and cerebral spinal fluid. Common triggers of the CTZ include metabolic abnormalities, toxins, and medications. Activation of the CTZ is mediated by dopamine (D2) receptors, serotonin (5HT3) receptors, and neurokinin receptors (NK1).


  • Vestibular system: This system is activated by disturbances to the vestibular apparatus in the inner ear. These include movements that cause motion sickness and dizziness. This pathway is triggered via histamine (H1) receptors and acetylcholine (ACh) receptors.

  • Peripheral Pathways: These pathways are triggered via chemoreceptors and mechanoreceptors in the gastrointestinal tract, as well as other organs such as the heart and kidneys. Common activators of these pathways include toxins present in the gastrointestinal lumen and distension of the gastrointestinal lumen from blockage or dysmotility of the bowels. Signals from these pathways travel via multiple neural tracts including the vagus, glossopharyngeal, splanchnic, and sympathetic nerves.


Signals from any of these pathways then travel to the brainstem, activating several structures including the nucleus of the solitary tract, the dorsal motor nucleus of the vagus, and central pattern generator.[19] These structures go on to signal various downstream effects of nausea and vomiting. The body's motor muscle responses involve halting the muscles of the gastrointestinal tract, and in fact causing reversed propulsion of gastric contents towards the mouth while increasing abdominal muscle contraction. Autonomic effects involve increased salivation and the sensation of feeling faint that often occurs with nausea and vomiting.



Treatment


If dehydration is present due to loss of fluids from severe vomiting, rehydration with oral electrolyte solutions is preferred.[1] If this is not effective or possible, intravenous rehydration may be required.[1] Medical care is recommended if: a person cannot keep any liquids down, has symptoms more than 2 days, is weak, has a fever, has stomach pain, vomits more than two times in a day or does not urinate for more than 8 hours.[20]



Medications


Many pharmacologic medications are available for the treatment of nausea. There is no medication that is clearly superior to other medications for all cases of nausea.[21] The choice of antiemetic medication may be based on the situation during which the person experiences nausea. For people with motion sickness and vertigo, antihistamines and anticholinergics such as meclizine and scopolamine are particularly effective.[22] Nausea and vomiting associated with migraine headaches respond best to dopamine antagonists such as metoclopramide, prochlorperazine, and chlorpromazine.[22] In cases of gastroenteritis, serotonin antagonists such as ondansetron were found to suppress nausea and vomiting, as well as reduce the need for IV fluid resuscitation.[22] The combination of pyridoxine and doxylamine is the first line treatment for pregnancy-related nausea and vomiting.[22]Dimenhydrinate is an inexpensive and effective over the counter medication for preventing postoperative nausea and vomiting.[23] Other factors to consider when choosing an antiemetic medication include the person's preference, side-effect profile, and cost.



Alternative medicine


In certain people, cannabinoids may be effective in reducing chemotherapy associated nausea and vomiting.[24][25] Several studies have demonstrated the therapeutic effects of cannabinoids for nausea and vomiting in the advanced stages of illnesses such as cancer and AIDS.[26][27]


In hospital settings topical anti-nausea gels are not indicated because of lack of research backing their efficacy.[28] Topical gels containing lorazepam, diphenhydramine, and haloperidol are sometimes used for nausea but are not equivalent to more established therapies.[28]


Ginger has also been shown to be potentially effective in treating several types of nausea.[29][30]


Tentative evidence supports acupuncture at point PC6.[31]



Prognosis


The outlook depends on the cause. Most people recover within few hours or a day. While short-term nausea and vomiting are generally harmless, they may sometimes indicate a more serious condition. When associated with prolonged vomiting, it may lead to dehydration or dangerous electrolyte imbalances or both. Repeated intentional vomiting, characteristic of bulimia, can cause stomach acid to wear away at the enamel in teeth.[32]



Epidemiology


Nausea and or vomiting is the main complaint in 1.6% of visits to family physicians in Australia.[8] However, only 25% of people with nausea visit their family physician.[1] In Australia, nausea, as opposed to vomiting, occurs most frequently in persons aged 15–24 years, and is less common in other age groups.[8]



See also


  • Cancer and nausea


References





  1. ^ abcdefghijkl Metz A, Hebbard G (September 2007). "Nausea and vomiting in adults--a diagnostic approach" (PDF). Aust Fam Physician (Review). 36 (9): 688–92. PMID 17885699..mw-parser-output cite.citation{font-style:inherit}.mw-parser-output .citation q{quotes:"""""""'""'"}.mw-parser-output .citation .cs1-lock-free a{background:url("//upload.wikimedia.org/wikipedia/commons/thumb/6/65/Lock-green.svg/9px-Lock-green.svg.png")no-repeat;background-position:right .1em center}.mw-parser-output .citation .cs1-lock-limited a,.mw-parser-output .citation .cs1-lock-registration a{background:url("//upload.wikimedia.org/wikipedia/commons/thumb/d/d6/Lock-gray-alt-2.svg/9px-Lock-gray-alt-2.svg.png")no-repeat;background-position:right .1em center}.mw-parser-output .citation .cs1-lock-subscription a{background:url("//upload.wikimedia.org/wikipedia/commons/thumb/a/aa/Lock-red-alt-2.svg/9px-Lock-red-alt-2.svg.png")no-repeat;background-position:right .1em center}.mw-parser-output .cs1-subscription,.mw-parser-output .cs1-registration{color:#555}.mw-parser-output .cs1-subscription span,.mw-parser-output .cs1-registration span{border-bottom:1px dotted;cursor:help}.mw-parser-output .cs1-ws-icon a{background:url("//upload.wikimedia.org/wikipedia/commons/thumb/4/4c/Wikisource-logo.svg/12px-Wikisource-logo.svg.png")no-repeat;background-position:right .1em center}.mw-parser-output code.cs1-code{color:inherit;background:inherit;border:inherit;padding:inherit}.mw-parser-output .cs1-hidden-error{display:none;font-size:100%}.mw-parser-output .cs1-visible-error{font-size:100%}.mw-parser-output .cs1-maint{display:none;color:#33aa33;margin-left:0.3em}.mw-parser-output .cs1-subscription,.mw-parser-output .cs1-registration,.mw-parser-output .cs1-format{font-size:95%}.mw-parser-output .cs1-kern-left,.mw-parser-output .cs1-kern-wl-left{padding-left:0.2em}.mw-parser-output .cs1-kern-right,.mw-parser-output .cs1-kern-wl-right{padding-right:0.2em}
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  7. ^ ναυτία, Henry George Liddell, Robert Scott, A Greek-English Lexicon, on Perseus


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  12. ^ Sheehan P (September 2007). "Hyperemesis gravidarum--assessment and management". Aust Fam Physician. 36 (9): 698–701. PMID 17885701.


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  14. ^ O'Connor RE, Brady W, Brooks SC, Diercks D, Egan J, Ghaemmaghami C, Menon V, O'Neil BJ, Travers AH, Yannopoulos D (2010). "Part 10: acute coronary syndromes: 2010 American Heart Association Guidelines for Cardiopulmonary Resuscitation and Emergency Cardiovascular Care". Circulation. 122 (suppl 3): S787–817. doi:10.1161/circulationaha.110.971028. PMID 20956226.


  15. ^ abcdef Hasler WL. Nausea, Vomiting, and Indigestion. In: Kasper D, Fauci A, Hauser S, Longo D, Jameson J, Loscalzo J. eds. 'Harrison's Principles of Internal Medicine, 19e. New York, NY: McGraw-Hill; 2015.


  16. ^ ab Porter, Ryan (American College of Gastroenterology). "Nausea and Vomiting" (PDF). Med.unc.edu. Retrieved 24 January 2018. Check date values in: |date= (help)


  17. ^ Horn, Andrews (2006). "Signals for nausea and emesis: implications for models of upper gastrointestinal disease". Autonomic Neuroscience. 125 (1–2): 100–115. doi:10.1016/j.autneu.2006.01.008. PMC 2658708. PMID 16556512. Retrieved 2015-01-11.


  18. ^ Lien, C (2012). Principles and Practice of Hospital Medicine. New York, NY: McGraw HIll. pp. Chapter 217: Domains of Care: Physical Aspects of Care.


  19. ^ Bashashati, Mohammad; McCallum, Richard W. (2014-01-05). "Neurochemical mechanisms and pharmacologic strategies in managing nausea and vomiting related to cyclic vomiting syndrome and other gastrointestinal disorders". European Journal of Pharmacology. 722: 79–94. doi:10.1016/j.ejphar.2013.09.075. ISSN 1879-0712. PMID 24161560.


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  21. ^ Furyk, Jeremy S; Meek, Robert A; Egerton-Warburton, Diana (2015-09-28). "Drugs for the treatment of nausea and vomiting in adults in the emergency department setting". Reviews. 9 (9): CD010106. doi:10.1002/14651858.cd010106.pub2. ISSN 1465-1858. PMID 26411330.


  22. ^ abcd Flake, ZA (March 1, 2015). "Practical selection of antiemetics in the ambulatory setting". American Family Physician. 91 (5): 293–6. PMID 25822385. Retrieved 10 November 2015.


  23. ^ Kranke P, Morin AM, Roewer N, Eberhart LH (March 2002). "Dimenhydrinate for prophylaxis of postoperative nausea and vomiting: a meta-analysis of randomized controlled trials". Acta Anaesthesiol Scand. 46 (3): 238–44. doi:10.1034/j.1399-6576.2002.t01-1-460303.x. PMID 11939912.


  24. ^ Tramèr MR, Carroll D, Campbell FA, Reynolds DJ, Moore RA, McQuay HJ (July 2001). "Cannabinoids for control of chemotherapy induced nausea and vomiting: quantitative systematic review". BMJ. 323 (7303): 16–21. doi:10.1136/bmj.323.7303.16. PMC 34325. PMID 11440936.


  25. ^ Drug Policy Alliance (2001). "Medicinal Uses of Marijuana: Nausea, Emesis and Appetite Stimulation". Archived from the original on 2007-08-05. Retrieved 2007-08-02.


  26. ^ World health Organization, Cannabis - epidemiology. http://www.who.int/substance_abuse/facts/cannabis/en/


  27. ^ Whiting, P. F.; Wolff, R. F.; Deshpande, S; Di Nisio, M; Duffy, S; Hernandez, A. V.; Keurentjes, J. C.; Lang, S; Misso, K; Ryder, S; Schmidlkofer, S; Westwood, M; Kleijnen, J (2015-06-23). "Cannabinoids for medical use: A systematic review and meta-analysis". JAMA. 313 (24): 2456–2473. doi:10.1001/jama.2015.6358. ISSN 0098-7484. PMID 26103030.


  28. ^ ab American Academy of Hospice and Palliative Medicine, "Five Things Physicians and Patients Should Question", Choosing Wisely: an initiative of the ABIM Foundation, American Academy of Hospice and Palliative Medicine, retrieved August 1, 2013, which cites


    • Smith, T. J.; Ritter, J. K.; Poklis, J. L.; Fletcher, D.; Coyne, P. J.; Dodson, P.; Parker, G. (2012). "ABH Gel is Not Absorbed from the Skin of Normal Volunteers". Journal of Pain and Symptom Management. 43 (5): 961–966. doi:10.1016/j.jpainsymman.2011.05.017. PMID 22560361.


    • Weschules, D. J. (2005). "Tolerability of the Compound ABHR in Hospice Patients". Journal of Palliative Medicine. 8 (6): 1135–1143. doi:10.1089/jpm.2005.8.1135. PMID 16351526.




  29. ^ Marx, WM; Teleni L; McCarthy AL; Vitetta L; McKavanagh D; Thomson D; Isenring E. (2013). "Ginger (Zingiber officinale) and chemotherapy-induced nausea and vomiting: a systematic literature review". Nutr Rev. 71 (4): 245–54. doi:10.1111/nure.12016. PMID 23550785.


  30. ^ Ernst, E.; Pittler, M.H. (1 March 2000). "Efficacy of ginger for nausea and vomiting: a systematic review of randomized clinical trials" (PDF). British Journal of Anaesthesia. 84 (3): 367–371. doi:10.1093/oxfordjournals.bja.a013442. PMID 10793599. Retrieved 6 September 2006.


  31. ^ Lee, A; Chan, SK; Fan, LT (2 November 2015). "Stimulation of the wrist acupuncture point PC6 for preventing postoperative nausea and vomiting". The Cochrane Database of Systematic Reviews. 11 (11): CD003281. doi:10.1002/14651858.CD003281.pub4. PMC 4679372. PMID 26522652.


  32. ^ "Bulimia Nervosa-Topic Overview". WebMD. Archived from the original on 25 July 2012. Retrieved 26 July 2012.




External links











Classification
D



  • ICD-10: R11.0


  • ICD-9-CM: 787.03


  • MeSH: D009325
External resources

  • MedlinePlus: 003117












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