Acute

Short description: Disease with a rapid onset and/or a short course

In medicine, describing a disease as acute denotes that it is of recent onset; it occasionally denotes a short duration. The quantification of how much time constitutes "short" and "recent" varies by disease and by context, but the core denotation of "acute" is always qualitatively in contrast with "chronic", which denotes long-lasting disease (for example, in acute leukaemia and chronic leukaemia).

In the context of the mass noun "acute disease", it refers to the acute phase (that is, a short course) of any disease entity.[1][2] For example, in an article on ulcerative enteritis in poultry, the author says, "in acute disease there may be increased mortality without any obvious signs",[3] referring to the acute form or phase of ulcerative enteritis.

## Contents

* 1 Meaning variations
* 1.1 Related terminology
* 2 Acute care
* 3 References

## Meaning variations

A mild stubbed toe is an acute injury. Similarly, many acute upper respiratory infections and acute gastroenteritis cases in adults are mild and usually resolve within a few days or weeks.[citation needed]

The term "acute" is also included in the definition of several diseases, such as severe acute respiratory syndrome, acute leukaemia, acute myocardial infarction, and acute hepatitis. This is often to distinguish diseases from their chronic forms, such as chronic leukaemia, or to highlight the sudden onset of the disease, such as acute myocardial infarct.[2]

### Related terminology

Related terms include:

Term  | Meaning

|

peracute | Very acute or violent. Denotes fulminant, whereas "acute" only sometimes connotes fulminant.

Peracute ("very") is not to be confused with preacute ("before", the opposite of postacute).

recurrent | "Happening again"—the concept is often one of multiple acute episodes. Relapse can mean the same as recurrent, although relapse is usually used to describe recurrence of chronic conditions that go into remission and then recur.
acute on chronic | An acute exacerbation of a chronic condition. It is applied to a variety of conditions, including liver failure,[4][5] subdural hematoma,[6] renal failure[7] respiratory failure,[8][9] and bronchitis.
acute on chronic inflammation | A term sometimes used in pathology to describe a pattern of inflammation which is a mixture of chronic and acute inflammation. It may be seen in asthma,[10] rheumatoid arthritis,[11] chronic peptic ulcer,[11] chronic periodontitis,[11] tuberculosis,[11] tonsillitis and other conditions.
subacute | A vaguely defined state that is clearly not acute, but rather between acute and chronic,[1][2] for example subacute endocarditis, or subacute sclerosing panencephalitis.
chronic | A long-term condition.[1][2]

## Acute care

Acute care is the early and specialist management of adult patients who have a wide range of medical conditions requiring urgent or emergency care usually within 48 hours of admission or referral from other specialties.[2]

Acute hospitals are those intended for short-term medical and/or surgical treatment and care which is a medical speciality of acute medicine, as often primary care is not positioned to assume this role.[12]

## References

1. ↑ 1.0 1.1 1.2 Encyclopedia of pain. Berlin: Springer. 2007. p. Acute Pain, Subacute Pain and Chronic Pain (Chapter.). ISBN 978-3-540-29805-2.
2. ↑ 2.0 2.1 2.2 2.3 2.4 Kenneth N. Anderson, ed (1998). Mosby's medical dictionary : illustrated in full colour throughout (5th revised ed.). St. Louis: Mosby. ISBN 0815146310. https://archive.org/details/mosbysmedicalnur00ande.
3. ↑ Pattison, Mark (2008), Poultry Diseases (6th ed.), Saunders/Elsevier, p. 207, ISBN 9780702028625.
4. ↑ Wlodzimirow, KA; Eslami, S; Abu-Hanna, A; Nieuwoudt, M; Chamuleau, RA (January 2013). "A systematic review on prognostic indicators of acute on chronic liver failure and their predictive value for mortality.". Liver International 33 (1): 40–52. doi:10.1111/j.1478-3231.2012.02790.x. PMID 22429562.
5. ↑ Graziadei, IW (September 2011). "The clinical challenges of acute on chronic liver failure.". Liver International 31 (Suppl 3): 24–6. doi:10.1111/j.1478-3231.2011.02585.x. PMID 21824280.
6. ↑ Lee, KS; Shim, JJ; Yoon, SM; Doh, JW; Yun, IG; Bae, HG (December 2011). "Acute-on-Chronic Subdural Hematoma: Not Uncommon Events.". Journal of Korean Neurosurgical Society 50 (6): 512–6. doi:10.3340/jkns.2011.50.6.512. PMID 22323938.
7. ↑ Dear, JW; Yuen, PS (July 2008). "Setting the stage for acute-on-chronic kidney injury.". Kidney International 74 (1): 7–9. doi:10.1038/ki.2008.126. PMID 18560361.
8. ↑ Ambrosino, N; Gherardi, M; Carpenè, N (2009). "End stage chronic obstructive pulmonary disease.". Pneumonologia I Alergologia Polska 77 (2): 173–9. doi:10.5603/ARM.27836. PMID 19462352.
9. ↑ Goldring, JJ; Wedzicha, JA (August 2008). "Managing acute on chronic respiratory failure: a guide to non-invasive ventilation.". British Journal of Hospital Medicine 69 (8): 444–9. doi:10.12968/hmed.2008.69.8.30740. PMID 18783091.
10. ↑ Newaskar, Manisha; Hardy, Karen A.; Morris, Claudia R. (1 January 2011). "Asthma in Sickle Cell Disease". The Scientific World Journal 11: 1138–1152. doi:10.1100/tsw.2011.105. PMID 21623460.
11. ↑ 11.0 11.1 11.2 11.3 Wakefield, D; Kumar RK (2001). Inflammation: chronic (Encyclopedia of life sciences). Nature Publishing Group. http://immuneweb.xxmu.edu.cn/reading/innate/16.pdf. Retrieved 2013-06-18.
12. ↑ "Health systems and services: the role of acute care". Bull World Health Organ 91 (5): 386–8. May 2013. doi:10.2471/BLT.12.112664. PMID 23678202.

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Basic medical terms used to describe disease conditions

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Medical diagnosis
Differential diagnosis
Prognosis

Acute
Chronic
Cure/Medicine:Remission (medicine)

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Eponymous disease
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