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Anorexia

This article is about the symptom of decreased appetite. For the eating disorder, please see Anorexia nervosa.

Name of Symptom/Sign:
**Anorexia**
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ICD-10	R63.0
ICD-O:	{{{ICDO}}}
ICD-9	783.0
OMIM	{{{OMIM}}}
MedlinePlus	{{{MedlinePlus}}}
eMedicine	{{{eMedicineSubj}}}/{{{eMedicineTopic}}}
DiseasesDB	{{{DiseasesDB}}}

Anorexia (deriving from the Greekόρεξη (orexe) = appetite) is the decreased sensation of appetite. While the term in non-scientific publications is often used interchangably with one of its subtypes, anorexia nervosa, there are many possible causes for a decreased appetite, some of which may be harmless while others pose significant risk for the person.

Causes

Common disorders that cause anorexia include anorexia nervosa, severe depression, cancer, dementia, AIDS, and chronic renal disease. Environmentally induced disorders, such as altitude sickness, can also trigger an acute form of anorexia. Anorexia may also be seen in congestive heart failure, perhaps due to congestion of the liverwith venous blood.

Although the presenting symptom(the one which prompts a patient to seek medical attention) in acute appendicitisis abdominal pain, the presence of anorexia is requisite to making the diagnosis.

Some medications, antidepressantsfor example, can have anorexia as a side effect. Most notoriously, however, chemicals that are a member of the phenethylaminefamily are known to have more intense anorectic properties. For this reason, many individuals suffering from anorexia nervosa seek to use these medications as a crutch. Such prescription medications include Ritalin, Adderall, Dexedrine, and Desoxyn. In some cases, these medications are prescribed to patients prior to undergoing an operation requiring general anesthesia. This is a prophylactic measure taken to ensure no food will back up into the esophagus and cause the patient to stop breathing during the procedure.

Results

Inability to eat in the long term may lead to involuntary weight loss, may contribute to cachexia(wasting) and to malnutrition.

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cs:Anorexie

da:Anoreksi de:Anorexie eo:Anoreksio es:Anorexia fi:Anoreksia fr:Anorexie gd:Fuath-bìdh he:???????? io:Anorexio is:Lystarstol ja:??????? pl:Anoreksja

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It uses material from the http://en.wikipedia.org/wiki/Anorexia Wikipedia article Anorexia.

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