Other namesHyperphagia
SpecialtyEndocrinology, psychiatry

Polyphagia or hyperphagia is excessive hunger or increased appetite.[1]

It 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),[citation needed] and the genetic disorders Prader–Willi syndrome and Bardet–Biedl syndrome.[2] Knocking out vagal nerve receptors has been shown to cause hyperphagia.[3]


Causes of increased appetite include:[4]

Diabetic ketoacidosis

Polyphagia usually occurs early in the course of diabetic ketoacidosis.[6] However, once insulin deficiency becomes more severe and ketoacidosis develops, appetite is suppressed.[7]

Other Languages
العربية: نهام
български: Полифагия
Ελληνικά: Υπερφαγία
español: Polifagia
فارسی: پرخوری
հայերեն: Պոլիֆագիա
Bahasa Indonesia: Polifagia
italiano: Iperfagia
עברית: פוליפגיה
polski: Hiperfagia
português: Polifagia
svenska: Hyperfagi
粵語: 大食積
中文: 多食症