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Prader–Willi syndrome

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Also known as Prader Willi syndrome, Prader-Willi syndrome, PWS, Prader–Labhart–Willi-Fanconi syndrome

rare genetic disorder

Key facts

Other names
Prader–Labhart–Willi-Fanconi syndrome
Pronunciation
/ ˈ p r ɑː d ər ˈ v ɪ l i / , / ˈ p r eɪ d ər w ɪ l i / , / ˈ p r ɑː d ər ˈ w ɪ l i /
Specialty
Genetics, endocrinology, pediatrics
Symptoms
Babies : weak muscles , poor feeding, slow development , Children : constantly hungry, intellectual impairment , behavioural problems
Usual onset
occurs at or near the time of conception for unknown reasons
Duration
Lifelong
Types
Three main molecular mechanisms result in PWS: paternal deletion, maternal UPD 15, and imprinting defects
Causes
Genetic disorder (typically new mutation)
Diagnostic method
Genetic testing
Treatment
Feeding therapy, physical therapy, occupational therapy, strict food supervision, exercise program, counseling
Medication
Growth hormone therapy
Frequency
1 in 15,000–20,000 people

via Wikipedia infobox

Research

4,991 papers

via PubMed

Wikidata facts

Named after
Heinrich Willi
Image
Prader-WilliBMC.png
Show 7 more facts
Commons category
Prader-Willi syndrome
health specialty
neurology
NCI Thesaurus ID
C75463
ICD-9-CM
759.81
external data available at URL
www.nanbyou.or.jp/entry/4768
on focus list of Wikimedia project
WikiProject Medicine
Sources (7)

via Wikidata · CC0

~16 min read

Encyclopedic overview

Eight-year-old patient with a severe form of PWS

Prader–Willi syndrome (PWS) is a rare genetic disorder caused by a loss of function of specific genes on chromosome 15. In babies, symptoms include weak muscles, poor feeding, and slow development. Beginning in childhood, those affected become constantly hungry, which often leads to obesity and type 2 diabetes. Mild to moderate intellectual impairment and behavioral problems are also typical of the disorder. Often, affected individuals have a narrow forehead, small hands and feet, short height, and light skin and hair. Most are unable to have children.

Excerpted from Wikipedia’s “Prader–Willi syndrome” article, available under the CC BY-SA 4.0 licence.