Question: Is The Most Common Hereditary Cause Of Mental Retardation?

What is borderline mental retardation?

Borderline intellectual functioning, also called borderline mental retardation (in the ICD-8), is a categorization of intelligence wherein a person has below average cognitive ability (generally an IQ of 70–85), but the deficit is not as severe as intellectual disability (below 70)..

What are 5 genetic diseases?

What You Need to Know About 5 Most Common Genetic DisordersDown Syndrome. Typically, the nucleus of an individual cell contains 23 pairs of chromosomes, but Down syndrome occurs when the 21st chromosome is copied an extra time in all or some cells. … Thalassemia. … Cystic Fibrosis. … Tay-Sachs disease. … Sickle Cell Anemia. … Learn More. … Recommended. … Sources.

What disabilities are hereditary?

They are not passed down from parent to child, as is the case with a hereditary disease.Sickle Cell Disease. Sickle cell disease is a hereditary disease caused by mutations in one of the genes that encode the hemoglobin protein. … Cystic Fibrosis. … Tay-Sachs. … Hemophilia. … Huntington’s Disease. … Muscular Dystrophy.

Can mental retardation be reversed?

“The same mutation in animals produces learning disorders, which we were able to eliminate in adult mice. Our work and other recent studies suggest that some forms of mental retardation can be reversed, even in the adult brain.”

What do they call mental retardation now?

The term “intellectual disability” is gradually replacing the term “mental retardation” nationwide.

What are signs of low IQ?

Lower than average scores on IQ tests. Difficulties talking or talking late. Having problems remembering things. Inability to connect actions with consequences.

Can mental retardation be genetic?

Mental retardation is caused by a number of different factors. Among genetic disorders, Fragile X syndrome and Down syndrome are the commonest causes of mental retardation. Fragile X syndrome (FXS) is an inherited form of mental retardation.

What is the life expectancy of someone with mental retardation?

As the table shows, children or adults with profound, severe, or suspected retardation who were immobile, not toilet-trained, and tube-fed had a very low life expectancy and usually died within four years.

What are the 4 levels of mental retardation?

The DSM-IV classifies mental retardation into four stages based on severity: mild (IQ score of 50-55 to approximately 70), moderate (IQ score of 30-35 to 50-55), severe (IQ score of 20-25 to 35-40), and profound (IQ score of less than 20-25).

Is Autism considered an intellectual disability?

About 1% of the general population is thought to have intellectual disability, and about 10% of individuals with intellectual disability have Autism Spectrum Disorder (ASD) or autistic traits. However, a much higher percentage of individuals with ASD have intellectual disability3.

Does intellectual disability run in families?

The most common causes of intellectual disabilities are: Genetic conditions. Sometimes an intellectual disability is caused by abnormal genes inherited from parents, errors when genes combine, or other reasons. Examples of genetic conditions are Down syndrome, Fragile X syndrome, and phenylketonuria (PKU).

What percent of the population is affected by mental retardation?

3 percentOne summary of the best prevalence studies available indicates that 2.5 to 3 percent of the general population is mentally retarded — based on the 1980 census, this totals from 5.5 to 6.7 million people. According to one report, the vast majority of the retarded population, an estimated 87 percent, is mildly retarded.

What does intellectual disability look like?

Intellectual disability1 involves problems with general mental abilities that affect functioning in two areas: intellectual functioning (such as learning, problem solving, judgement) adaptive functioning (activities of daily life such as communication and independent living)

What is the most common cause of mental retardation?

Down’s syndrome is the most common specific cause of mental retardation, followed by the Fragile X syndrome, which mainly affects boys.

Is ADHD mental retardation?

Introduction: Attention deficit hyperactivity disorder (ADHD) is a common condition in children with mental retardation (MR), with a prevalence rate of between 4 and 15%.