Disease or Syndrome
Prader-Willi syndrome
Subclass of:
Congenital chromosomal disease;
Multiple congenital anomalies;
Intellectual Disability;
Obesity
Also called:
PWS
Definitions related to prader-willi syndrome:
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A genetic syndrome caused by deletions or disruptions of chromosome 15. It is characterized by reduced fetal activity, mental retardation, hypotonia, short stature, and hypogonadism.NCI ThesaurusU.S. National Cancer Institute, 2021
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A syndrome caused by loss of the paternal copy of the q11-q13 region of chromosome 15 due to deletion, maternal uniparental disomy, or imprinting defects. The condition is characterized by infantile hypotonia, feeding difficulties, and failure to thrive in the first year of life, progressing to hyperphagia and obesity. Other common features include hypopigmentation, distinctive facial features, short stature, small hands and feet, hypogonadism, and neurobehavioral issues.NICHD Pediatric TerminologyU.S. National Cancer Institute, 2021
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An autosomal dominant disorder caused by deletion of the proximal long arm of the paternal chromosome 15 (15q11-q13) or by inheritance of both of the pair of chromosomes 15 from the mother (UNIPARENTAL DISOMY) which are imprinted (GENETIC IMPRINTING) and hence silenced. Clinical manifestations include MENTAL RETARDATION; MUSCULAR HYPOTONIA; HYPERPHAGIA; OBESITY; short stature; HYPOGONADISM; STRABISMUS; and HYPERSOMNOLENCE. (Menkes, Textbook of Child Neurology, 5th ed, p229)NLM Medical Subject HeadingsU.S. National Library of Medicine, 2021
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(prader willi syndrome) Congenital neurobehavioral disorder characterized by rounded face, low forehead, almond shaped eyes, squinting, hypogonadism, hypotonia, insatiable appetite leading to obesity, and mental retardation; chromosomal disorder usually associated with a deletion of the proximal portion of the long arm of chromosome 15.CRISP ThesaurusNational Institutes of Health, 2006
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Prader-Willi Syndrome (PWS) is a rare genetic disorder. It causes poor muscle tone, low levels of sex hormones and a constant feeling of hunger. The part of the brain that controls feelings of fullness or hunger does not work properly in people with PWS. They overeat, leading to obesity. Babies with PWS are usually floppy, with poor muscle tone, and have trouble sucking. Boys may have undescended testicles. Later, other signs appear. These include Short stature; Poor motor skills; Weight gain; Underdeveloped sex organs; Mild intellectual and learning disabilities. There is no cure for PWS. Growth hormone, exercise, and dietary supervision can help build muscle mass and control weight. Other treatments may include sex hormones and behavior therapy. Most people with PWS will need specialized care and supervision throughout their lives. NIH: National Institute of Child Health and Human DevelopmentMedlinePlusU.S. National Library of Medicine, 2021
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Prader-Willi syndrome (PWS) is characterized by severe hypotonia and feeding difficulties in early infancy, followed in later infancy or early childhood by excessive eating and gradual development of morbid obesity (unless eating is externally controlled). Motor milestones and language development are delayed. All individuals have some degree of cognitive impairment. A distinctive behavioral phenotype (with temper tantrums, stubbornness, manipulative behavior, and obsessive-compulsive characteristics) is common. Hypogonadism is present in both males and females and manifests as genital hypoplasia, incomplete pubertal development, and, in most, infertility. Short stature is common (if not treated with growth hormone); characteristic facial features, strabismus, and scoliosis are often present.GeneReviewsUniversity of Washington, 2021
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Prader-Willi syndrome is a chromosomal deletion syndrome in which part of chromosome 15 is missing. About 70% of people who have Prader-Willi syndrome are missing part of chromosome 15. About 30% of people who have this syndrome have problems with the function of chromosome 15.Merck & Co., Inc., 2020
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Prader-Willi syndrome (PWS) is a disorder caused by a deletion or disruption of genes in the proximal arm of chromosome 15 or by maternal disomy in the proximal arm of chromosome 15. Commonly associated characteristics of this disorder include diminished fetal activity, obesity, hypotonia, mental retardation, short stature,...WebMD, 2019
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Prader-Willi (PRAH-dur VIL-e) syndrome is a rare genetic disorder that results in a number of physical, mental and behavioral problems. A key feature of Prader-Willi syndrome is a constant sense of hunger that usually begins at about 2 years of age.Mayo Foundation for Medical Education and Research
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Prader-Willi syndrome (PWS) is a genetic condition that affects many parts of the body. Infants with PWS have severe hypotonia (low muscle tone), feeding difficulties, and slow growth. In later infancy or early childhood, affected children typically begin to eat excessively and become obese. Other signs and symptoms often include short...National Center for Advancing Translational Sciences
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Prader-Willi syndrome (PWS), a rare human genetic disorder characterized by weak muscle tone at birth, small stature, intellectual disabilities, overeating leading to childhood obesity, and high rates of morbidity and mortality. PWS arises from the deletion or disruption of genes in a particular...Encyclopedia Britannica, Inc., 2020
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