Related Experiment Video

Updated: Jul 29, 2026

Portable Intermodal Preferential Looking (IPL): Investigating Language Comprehension in Typically Developing Toddlers and Young Children with Autism
10:11

Portable Intermodal Preferential Looking (IPL): Investigating Language Comprehension in Typically Developing Toddlers and Young Children with Autism

Published on: December 14, 2012

Prader-Willi syndrome

R Couper1

  • 1Department of Paediatrics, University of Adelaide, Women's and Children's Hospital, North Adelaide, South Australia, Australia. rcouper@medicine.adelaide.edu.au

Journal of Paediatrics and Child Health
|August 24, 1999
PubMed

Insights

Prader-Willi syndrome is a genetic disorder causing hypotonia, obesity, and intellectual disability. Key challenges for families include managing hyperphagia, food seeking behaviors, and behavioral issues like tantrums.

Area of Science:

  • Genetics
  • Pediatrics
  • Neurology

Background:

  • Prader-Willi syndrome is a complex genetic disorder.
  • It presents with neonatal hypotonia, followed by hyperphagia, obesity, and intellectual disability.

Purpose of the Study:

  • To summarize the key characteristics and genetic causes of Prader-Willi syndrome.
  • To highlight the primary challenges faced by families managing the disorder.

Main Methods:

  • Review of existing literature on Prader-Willi syndrome.
  • Analysis of genetic causes including chromosomal microdeletions and maternal disomy.

Main Results:

  • Prader-Willi syndrome results from genetic alterations on chromosome 15.
  • 70% of cases involve a 15p microdeletion, while 30% result from maternal disomy of chromosome 15.
  • Common issues include hyperphagia, obesity, and behavioral problems such as tantrums.

Conclusions:

  • Understanding the genetic basis is crucial for diagnosis.
  • Effective management strategies are needed to address hyperphagia, obesity, and behavioral challenges in Prader-Willi syndrome.

More Related Videos

Testing Sensory and Multisensory Function in Children with Autism Spectrum Disorder09:13

Testing Sensory and Multisensory Function in Children with Autism Spectrum Disorder

Published on: April 22, 2015

Paradigms for Behavioral Assessment in Drosophila Model of Autism Spectrum Disorder08:30

Paradigms for Behavioral Assessment in Drosophila Model of Autism Spectrum Disorder

Published on: September 6, 2024

Related Concept Videos

Pleiotropy01:33

Pleiotropy

Pleiotropy is the phenomenon in which a single gene impacts multiple, seemingly unrelated phenotypic traits. For example, defects in the SOX10 gene cause Waardenburg Syndrome Type 4, or WS4, which can cause defects in pigmentation, hearing impairments, and an absence of intestinal contractions necessary for elimination. This diversity of phenotypes results from the expression pattern of SOX10 in early embryonic and fetal development. SOX10 is found in neural crest cells that form melanocytes,...
Genomic Imprinting and Inheritance02:30

Genomic Imprinting and Inheritance

Diploid organisms inherit genetic material through chromosomes from both parents. Copies of the same gene are known as alleles. In most cases, both alleles are simultaneously expressed and allow various cellular processes to function optimally. If one of the alleles is missing or mutated, the expression of the other allele can compensate; however, this is not true for all genes.
The expression of some genes depends on which parent passed the gene to the offspring, through a phenomenon known as...
Prosopagnosia01:24

Prosopagnosia

Prosopagnosia, also known as face blindness, is the inability to recognize faces. In severe cases, individuals with prosopagnosia may not recognize close family members, including parents and spouses, by their faces. For instance, someone with prosopagnosia might walk past their child in a crowd, only realizing their mistake upon noticing their child's distinctive backpack or favorite jacket. Prosopagnosia specifically impairs facial recognition, while the recognition of other objects or...
Autism Spectrum Disorder01:19

Autism Spectrum Disorder

Autism spectrum disorder (ASD) is a neurodevelopmental condition marked by persistent deficits in social communication and interaction alongside restrictive and repetitive behaviors or interests. ASD is sometimes accompanied by intellectual impairment.
These core symptoms manifest differently among individuals, ranging from mild to severe. The disorder's complexity extends beyond its clinical presentation, encompassing a diverse range of biological, cognitive, and sociocultural influences.
Oppositional Defiant Disorder01:30

Oppositional Defiant Disorder

A persistent pattern of angry or irritable mood, defiant behavior, or vindictiveness characterizes Oppositional Defiant Disorder (ODD). Symptoms must occur over at least six months, involve interactions with individuals beyond siblings, and meet specific diagnostic criteria to be clinically significant. The disorder affects emotional regulation, social interactions, and behavior, often manifesting early in life and influencing long-term development and functioning.
Diagnostic Criteria and...
Intellectual Disability01:29

Intellectual Disability

Intellectual disability (ID) is a neurodevelopmental condition characterized by deficits in intellectual and adaptive functioning that manifest during the developmental period. This condition encompasses challenges in reasoning, memory, problem-solving, and learning, accompanied by impairments in everyday life skills, such as communication, self-care, and social interactions. Intellectual disability affects approximately 1% of the population in the United States, impacting an estimated 5...