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Polyphagia

Polyphagia
Classification and external resources
ICD-10 R63.2
ICD-9-CM 783.6
DiseasesDB 29453
MeSH D006963
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Polyphagia or hyperphagia is excessive hunger or increased appetite.

In medicine, polyphagia (sometimes known as hyperphagia) is a medical sign meaning excessive hunger and abnormally large intake of solids by mouth. It can be caused by disorders such as diabetes, Kleine–Levin syndrome (a malfunction in the hypothalamus), and the genetic disorders Prader–Willi syndrome and Bardet–Biedl syndrome.

Causes of increased appetite include:

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

The word polyphagia (/ˌpɒliˈfiə/) uses combining forms of + , from the Greek words πολύς (polys), "very much" or "many", and φαγῶ (phago), "eating" or "devouring".


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