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ICD9 = {{ICD9|783.6}} |
 
ICD9 = {{ICD9|783.6}} |
 
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:''In [[biology]], "polyphagia" is a type of [[phagy]], referring to an animal that feeds on many kinds of food.''
 
   
In [[medicine]],'''hyperphagia''' (sometimes known as '''polyphagia''' ) is a [[medical sign]] meaning excessive [[hunger]] and an abnormally large (poly-) intake of solids by mouth.
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In medicine, '''polyphagia''' (sometimes known as '''hyperphagia''') is a [[medical sign]] meaning excessive [[hunger]] and abnormally large intake of solids by mouth. Disorders such as [[diabetes]], [[Kleine-Levin Syndrome]] (a malfunction in the hypothalamus), the genetic disorders [[Prader-Willi Syndrome]] and [[Bardet Biedl Syndrome]] can cause hyperphagia (compulsive hunger).<ref>[http://www.ncbi.nlm.nih.gov/omim/176270 OMIM::Prader-Willi][http://www.ncbi.nlm.nih.gov/omim/209900 OMIM::Bardet-Biedl]</ref>
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It is associated with excessive [[hunger]] or increased [[appetite]].<ref name="pmid21411768">{{cite journal| author=Berthoud HR, Lenard NR, Shin AC| title=Food reward, hyperphagia, and obesity. | journal=Am J Physiol Regul Integr Comp Physiol | year= 2011 | volume= 300 | issue= 6 | pages= R1266-77 | pmid=21411768 | doi=10.1152/ajpregu.00028.2011 | pmc=3119156 }}</ref> It derives from the Greek words πολύς (polys) which means "very much", and φαγῶ (phago) meaning "eat".
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== Causes ==
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Causes of increased appetite include:<ref>[http://www.nlm.nih.gov/medlineplus/ency/article/003134.htm NIH Medline plus]</ref>
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* [[Anxiety]]
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* Certain drugs
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* [[Diabetes mellitus]]
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* [[Hyperthyroidism]]
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* [[Hypoglycemia]]
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* [[Premenstrual syndrome]]
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* [[Prader-Willi syndrome]]
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* [[Bulimia]]
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* [[Graves' disease]]
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=== Diabetic ketoacidosis ===
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Polyphagia usually occurs early in the course of [[diabetic ketoacidosis]].<ref name="pmid21499159">{{cite journal| author=Elliott RE, Jane JA, Wisoff JH| title=Surgical management of craniopharyngiomas in children: meta-analysis and comparison of transcranial and transsphenoidal approaches. | journal=Neurosurgery | year= 2011 | volume= 69 | issue= 3 | pages= 630–43; discussion 643 | pmid=21499159 | doi=10.1227/NEU.0b013e31821a872d | pmc= | url= }}</ref> However, once insulin deficiency becomes more severe and ketoacidosis develops, appetite is suppressed.<ref name="pmid19394382">{{cite journal| author=Masuzaki H, Tanaka T, Ebihara K, Hosoda K, Nakao K| title=Hypothalamic melanocortin signaling and leptin resistance--perspective of therapeutic application for obesity-diabetes syndrome. | journal=Peptides | year= 2009 | volume= 30 | issue= 7 | pages= 1383–6 | pmid=19394382 | doi=10.1016/j.peptides.2009.04.008 | pmc= | url=http://www.ncbi.nlm.nih.gov/entrez/eutils/elink.fcgi?dbfrom=pubmed&tool=sumsearch.org/cite&retmode=ref&cmd=prlinks&id=19394382 }}</ref>
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==In biology==
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''In [[biology]], "polyphagia" is a type of [[phagy]], referring to an animal that feeds on many kinds of food.''
   
 
==See also==
 
==See also==
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* [[Prada-Willi Syndrome]]
 
* [[Prada-Willi Syndrome]]
 
* [[Somatoform disorders]]
 
* [[Somatoform disorders]]
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* [[Ventromedial hypothalamic syndrome]]
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==References==
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<references/>
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==External links==
 
==External links==

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Name of Symptom/Sign:
Polyphagia
[[Image:{{{Image}}}|190px|center|]]
ICD-10 R63.2
ICD-O: {{{ICDO}}}
ICD-9 783.6
OMIM {{{OMIM}}}
MedlinePlus {{{MedlinePlus}}}
eMedicine {{{eMedicineSubj}}}/{{{eMedicineTopic}}}
DiseasesDB {{{DiseasesDB}}}

In medicine, polyphagia (sometimes known as hyperphagia) is a medical sign meaning excessive hunger and abnormally large intake of solids by mouth. Disorders such as diabetes, Kleine-Levin Syndrome (a malfunction in the hypothalamus), the genetic disorders Prader-Willi Syndrome and Bardet Biedl Syndrome can cause hyperphagia (compulsive hunger).[1] It is associated with excessive hunger or increased appetite.[2] It derives from the Greek words πολύς (polys) which means "very much", and φαγῶ (phago) meaning "eat".

Causes Edit

Causes of increased appetite include:[3]

Diabetic ketoacidosis Edit

Polyphagia usually occurs early in the course of diabetic ketoacidosis.[4] However, once insulin deficiency becomes more severe and ketoacidosis develops, appetite is suppressed.[5]


In biologyEdit

In biology, "polyphagia" is a type of phagy, referring to an animal that feeds on many kinds of food.

See alsoEdit

ReferencesEdit

  1. OMIM::Prader-WilliOMIM::Bardet-Biedl
  2. Berthoud HR, Lenard NR, Shin AC (2011). Food reward, hyperphagia, and obesity.. Am J Physiol Regul Integr Comp Physiol 300 (6): R1266-77.
  3. NIH Medline plus
  4. Elliott RE, Jane JA, Wisoff JH (2011). Surgical management of craniopharyngiomas in children: meta-analysis and comparison of transcranial and transsphenoidal approaches.. Neurosurgery 69 (3): 630–43; discussion 643.
  5. Masuzaki H, Tanaka T, Ebihara K, Hosoda K, Nakao K (2009). Hypothalamic melanocortin signaling and leptin resistance--perspective of therapeutic application for obesity-diabetes syndrome.. Peptides 30 (7): 1383–6.


External linksEdit


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