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From Wikipedia, the free encyclopedia

For the Canadian TV show, see Hiccups (TV series).
Singultus
ICD-10 R06.6
ICD-9 786.8
DiseasesDB 5887
MedlinePlus 003068
eMedicine emerg/252
MeSH D006606

A hiccup or hiccough (pronounced /ˈhɪkʌp/ HICK-up) is an esophageal contraction of the diaphragm that repeats several times per minute. In humans, the abrupt rush of air into the lungs causes the epiglottis to close, creating a "hic" sound.

In medicine it is known as synchronous diaphragmatic flutter (SDF), or singultus, from the Latin singult, "the act of catching one's breath while sobbing".[1] The hiccup is an involuntary action involving a reflex arc.[1]

A bout of hiccups, in general, resolves itself without intervention, although many home remedies claim to shorten the duration, and medical treatment is occasionally necessary in cases of chronic hiccups.

Contents

Causes

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Hiccups are caused by many central and peripheral nervous system disorders, all from injury or irritation to the phrenic and vagus nerves, as well as toxic or metabolic disorders affecting the aforementioned systems. Hiccups often occur after drinking carbonated beverages or alcohol. Prolonged laughter is also known to cause hiccups. Eating too fast can also cause the hiccups[2]. Persistent or intractable hiccups may be caused by any condition which irritates or damages the relevant nerves. Chemotherapy—which can include a huge amount of different drugs—has been implicated in hiccups (some data states 30 percent of patients),[citation needed] while other studies have not proven such a relationship. Many times chemotherapy is applied to tumors sitting at places that are by themselves prone to cause hiccups, if irritated.[3][4]

Phylogenetic hypothesis

Christian Straus and co-workers at the Respiratory Research Group, University of Calgary, Canada, propose that the hiccup is an evolutionary remnant of earlier amphibian respiration; amphibians such as frogs gulp air and water via a rather simple motor reflex akin to mammalian hiccuping.[5] In support of this idea, they observe that the motor pathways that enable hiccuping form early during fetal development, before the motor pathways that enable normal lung ventilation to form; thus according to recapitulation theory the hiccup is evolutionarily antecedent to modern lung respiration. Additionally, they point out that hiccups and amphibian gulping are inhibited by elevated CO2 and can be completely stopped by the drug Baclofen (a GABAB receptor agonist), illustrating a shared physiology and evolutionary heritage. These proposals explain why premature infants spend 2.5% of their time hiccuping, indeed they are gulping just like amphibians, as their lungs are not yet fully formed.[6]

Treatment

Ordinary hiccups are cured easily without medical intervention; in most cases they can be stopped simply by forgetting about them.[citation needed] However, there are a number of anecdotal treatments for casual cases of hiccups. Some of the more common home remedies include giving the afflicted a fright or shock, eating peanut butter, taking a teaspoon of vinegar, drinking water (sometimes in an unorthodox manner), holding one's breath and altering one's breathing patterns. A solution involving sugar placed on or under the tongue was cited in the December 23, 1971 issue of the New England Journal of Medicine.[7]

Medical treatment

Hiccups are treated medically only in severe and persistent (termed "intractable") cases, such as in the case of a 15-year-old girl who, in 2007, hiccuped continuously for five weeks.[8] Haloperidol (Haldol, an anti-psychotic and sedative), metoclopramide (Reglan, a gastrointestinal stimulant), and chlorpromazine (Thorazine, an anti-psychotic with strong sedative effects) are used in cases of intractable hiccups. In severe or resistant cases, baclofen, an anti-spasmodic, is sometimes required to suppress hiccups. Effective treatment with sedatives often requires a dose that renders the person either unconscious or highly lethargic. Hence, medicating singultus is done short-term, as the affected individual cannot continue with normal life activities while taking the medication.

Digital rectal massage has been recommended as a remedy that causes immediate cessation of hiccups and which should be tried before resorting to drugs.[9]

Persistent and intractable hiccups due to electrolyte imbalance (hypokalemia, hyponatremia) may benefit from drinking a carbonated beverage containing salt to normalize the potassium-sodium balance in the nervous system. The carbonation promotes quicker absorption. Carbonated beverages by themselves may have a tendency to provoke hiccups in some people.

The administration of intranasal vinegar was found to ease the chronic and severe hiccups of a three-year old Japanese girl. Vinegar may stimulate the dorsal wall of the nasopharynx, where the pharyngeal branch of the glossopharyngeal nerve (the afferent of the hiccup reflex arc) is located.[10]

Dr. Bryan R. Payne, a neurosurgeon at the Louisiana State University Health Sciences Center in New Orleans, has had some success with an experimental procedure in which a vagus nerve stimulator is implanted in the upper chest of patients with an intractable case of hiccups. "It sends rhythmic bursts of electricity to the brain by way of the vagus nerve, which passes through the neck. The Food and Drug Administration approved the vagus nerve stimulator in 1997 as a way to control seizures in some patients with epilepsy. In 2005, the agency endorsed the use of the stimulator as a treatment of last resort for people with severe depression".[11]

Home remedies

While numerous home remedies are offered, they mostly fall into two broad categories: purely psychosomatic cures centered on relaxation and distraction and cures involving swallowing and eating (with the general rationale that this would remove irritants or reset mechanisms in the affected region).

Long-term cases

American man Charles Osborne had the hiccups for 68 years, from 1922 to 1990, and was entered in the Guinness World Records as the man with the longest attack of hiccups.[12]

In 2007, a teenager from Washington State in the United States named Cheyenne Motland hiccuped around 50 times a minute for more than five weeks.[13] After her hiccups returned, her neurologist suggested that she may have Tourette syndrome, and the hiccups may be a "tic" caused by Tourette's.[14]

Christopher Sands from the UK had hiccups for a period of almost three years which was eventually discovered to be due to a tumor located on the part of the brain that controls vascular activities, once 2/3 of the tumor was removed the hiccups appeared to settle and Sands no longer suffers from his condition.[15]

See also

References

  1. ^ a b Wilkes, Garry (2 August 2007). "Hiccups". eMedicine. Medscape. http://emedicine.medscape.com/article/775746-overview. Retrieved 2009-04-22. 
  2. ^ http://www.articlesbase.com/alternative-medicine-articles/hiccups-causes-and-treatment-461444.html
  3. ^ "Hiccups, Information about Hiccups". Faqs.org. http://www.faqs.org/health/topics/2/Hiccups.html. Retrieved 2010-01-12. 
  4. ^ "Hiccups: Adverse Reaction to Chemo". Annieappleseedproject.org. 2002-05-15. http://www.annieappleseedproject.org/hicasadreact.html. Retrieved 2010-01-12. 
  5. ^ Straus, C.; Vasilakos, K; Wilson, RJ; Oshima, T; Zelter, M; Derenne, JP; Similowski, T; Whitelaw, WA (February 2003). "A phylogenetic hypothesis for the origin of hiccough". BioEssays 25 (2): 182–188. doi:10.1002/bies.10224. 10.1002/bies.10224. PMID 12539245. http://www3.interscience.wiley.com/cgi-bin/abstract/102526391/ABSTRACT?CRETRY=1&SRETRY=0=Abstract. Retrieved 2007-07-20. 
  6. ^ Kahrilas, P.J.; Shi, G (November 1, 1997). "Why do we hiccup?". Gut 41 (5): 712–713. doi:10.1136/gut.41.5.712 (inactive 2010-01-09). PMID 9414986. PMC 1891574. http://gut.bmj.com/cgi/content/extract/41/5/712. Retrieved 2007-07-20. 
  7. ^ Boswell, Wendy (2007-03-25). "MacGyver Tip: Cure hiccups with sugar". The People's Pharmacy (Lifehacker). http://lifehacker.com/246873/macgyver-tip-cure-hiccups-with-sugar. Retrieved 2009-11-30. 
  8. ^ "Teen's hiccups stop after five weeks". ABC News Online. 2007-03-02. http://www.abc.net.au/news/newsitems/200703/s1861793.htm. 
  9. ^ Odeh, M; Bassan, H; Oliven, A (February 1990). "Termination of intractable hiccups with digital rectal massage". J Intern Med 227 (2): 145–6. doi:10.1111/j.1365-2796.1990.tb00134.x. PMID 2299306. http://www.ncbi.nlm.nih.gov/pubmed/2299306?dopt=Abstract. Retrieved 2008-04-24. 
  10. ^ Iwasaki, N; et al. (May 2007). "Hiccup treated by administration of intranasal vinegar". No to Hattatsu 39 (3): 202–5. PMID 17515134. 
  11. ^ Schaffer, Amanda (2006-01-10). "A Horrific Case of Hiccups, a Novel Treatment". New York Times. http://www.nytimes.com/2006/01/10/health/10hicc.html. 
  12. ^ "Survivor of 68-Year Hiccup Spell Dies" (Sunrise Edition: 2.B. ed.). Omaha World-Herald. 5 May 1991. 
  13. ^ "Florida girl hiccuping again after returning to school". msnbc.msn.com. March 16, 2007. http://www.msnbc.msn.com/id/17643118. 
  14. ^ "Hiccup Girl: "I have Tourette's"". WTSP-TV, tampabays10.com. January 10, 2008. http://www.tampabays10.com/news/local/article.aspx?storyid=71545. 
  15. ^ "So does holding your breath REALLY banish hiccups?". The Sun. May 8, 2008. http://www.thesun.co.uk/sol/homepage/woman/health/article1137753.ece. 

Further reading

  • "Fish Out of Water", Neil Shubin, Natural History, February 2008 issue, pages 26–31 - hiccup related to reflex in fish and amphibians.

External links


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