https://www.psychdb.com/ 2026-07-18T03:59:17-0700 https://www.psychdb.com/ https://www.psychdb.com/lib/tpl/bootstrap3/images/favicon.ico text/html 2021-01-14T16:47:54-0700 Anonymous (anonymous@undisclosed.example.com) https://www.psychdb.com/child/genetic-disorders/angelman-syndrome?rev=1610671674&do=diff Angelman Syndrome (AS) Primer Angelman Syndrome (AS) (pejoratively referred to in the past as “Happy Puppet Syndrome”)is a genetic disorder that results in microcephaly, facial dysmorphia, severe intellectual disability, developmental disability, limited speech, balance and movement problems, seizures, and sleep difficulties. text/html 2021-03-04T20:26:46-0700 Anonymous (anonymous@undisclosed.example.com) https://www.psychdb.com/child/genetic-disorders/digeorge-syndrome-22q11.2-22q-deletion?rev=1614918406&do=diff DiGeorge (22q11.2 Deletion) Syndrome Primer DiGeorge Syndrome (also known as 22q11.2 Deletion Syndrome, and formerly Velocardiofacial Syndrome) is a syndrome caused by the deletion of a small segment (microdeletion) of chromosome 22. It is the most common microdeletion syndrome in humans. This microdeletion is also responsible for a 20 to 30 times increased risk for text/html 2021-03-03T10:46:20-0700 Anonymous (anonymous@undisclosed.example.com) https://www.psychdb.com/child/genetic-disorders/down-syndrome-trisomy-21?rev=1614797180&do=diff Down Syndrome (Trisomy 21) Primer Down Syndrome (Trisomy 21) is the most common identifiable genetic cause of intellectual disability. It is due to the presence of all or part of a third copy of chromosome 21. Individuals with Down syndrome have a characteristic facial appearance and hypotonia in infancy. About half are born with a heart defect. text/html 2021-01-28T12:31:36-0700 Anonymous (anonymous@undisclosed.example.com) https://www.psychdb.com/child/genetic-disorders/fragile-x-syndrome-fxs?rev=1611865896&do=diff Fragile X Syndrome (FXS) Primer Fragile X Syndrome (FXS) is an X chromosome-linked dominant disorder caused by the amplification of a CGG repeat in the 5′ untranslated region of the fragile X mental retardation gene 1 (FMR1). It is the most common text/html 2022-01-25T23:14:13-0700 Anonymous (anonymous@undisclosed.example.com) https://www.psychdb.com/child/genetic-disorders/home?rev=1643181253&do=diff Genetic Disorders Primer Genetic Disorders (also called Genetic Diseases and Syndromes) are conditions caused by an abnormality in an individual's DNA. These abnormalities can be as little as a single-base mutation, all the way to single gene defects, multi-gene defects, teratogenic problems, or chromosomal abnormalities. Many genetic conditions can cause significant neuropsychiatric disorders and symptoms.<ul id="frontpage "style="column-width:20em; -webkit-column-count: 1; -moz-column-count:… text/html 2021-01-14T16:49:50-0700 Anonymous (anonymous@undisclosed.example.com) https://www.psychdb.com/child/genetic-disorders/prader-willi-syndrome?rev=1610671790&do=diff Prader-Willi Syndrome (PWS) Primer Prader–Willi Syndrome (PWS) a is genetic disorder caused by a loss of function of specific genes on chromosome 15. At birth, individuals will have muscle weakness, failure to feed, and slowed development. Characteristic hyperphagia begins in childhood, and children become at high risk for obesity and type 2 diabetes. Individuals have marked mild to moderate intellectual impairment and behavioural difficulties throughout the lifespan. text/html 2021-01-30T11:55:24-0700 Anonymous (anonymous@undisclosed.example.com) https://www.psychdb.com/child/genetic-disorders/rett-syndrome?rev=1612036524&do=diff Rett Syndrome Primer Rett Syndrome is a genetic disorder that usually becomes apparent after 6 to 18 months of age in females. Symptoms include problems with language, coordination, and repetitive movements that can resemble autism spectrum disorder. Often there is slower growth, problems walking, and a smaller head size. text/html 2020-10-09T19:48:25-0700 Anonymous (anonymous@undisclosed.example.com) https://www.psychdb.com/child/genetic-disorders/williams-syndrome?rev=1602298105&do=diff Williams Syndrome Primer Williams Syndrome is a genetic disorder characterized by mild to moderate intellectual disability, facial dysmorphia, hypercalcemia, and cardiac defects. Individuals have an outgoing personality, and interact readily with strangers. Psychiatric Symptoms The most common psychiatric disorders found in Williams syndrome have been reported mainly in children and include