Quick Answer: What Is The Most Common Level Of Mental Retardation?

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 most common form of mental retardation?

X-linked mental retardation Fragile X syndrome is the most common inherited form of mental retardation and, after Down syndrome, the most common genetic form. It is X linked, with dominant inheritance, and the penetrance is lower in females.

Is mental retardation curable?

A small study of 30 people with the most common inherited form of mental retardation has found encouraging evidence that some symptoms of the disorder can be alleviated with drugs.

What are the classes of mental retardation?

The severity of the condition may be categorized further by IQ scores into borderline normal (IQ 71–85), mild (50–70), moderate (35– 50), severe (20–35) and profound (<20) MR with the exact cut-off points varying slightly between the DSM-IV TR and ICD-10 classifications.

How does intellectual disability affect a person?

Intellectual disability (or ID) is a term used when a person has certain limitations in cognitive functioning and skills, including communication, social and self-care skills. These limitations can cause a child to develop and learn more slowly or differently than a typically developing child.

What is severe mental retardation?

Definition. Severe Mental Retardation is defined by the presence of significantly subaverage general intellectual functioning as well as significant limitations in adaptive functioning (adaptive behavior) present prior to the age of 18 years.

What are signs of low IQ?

Lower than average scores on IQ tests. Difficulties talking or talking late. Having problems remembering things….IQ 50-70.Slower than normal in all areas.Can conform socially.Can acquire daily task skills.Integrated in society.No unusual physical signs.Can acquire practical skills.Reading and math skills up to grades 3-6.

What are the 4 levels of mental retardation?

The condition is further divided into four levels of retardation based on IQ, which include mild mental retardation (IQ between 50-55 and 70), moderate mental retardation (IQ between 35-40 and 50-55), severe mental retardation (IQ between 20-25 and 35-40), and profound mental retardation (IQ below 20 or 25) (American …

What are the different causes of mental retardation?

What causes intellectual disability?trauma before birth, such as an infection or exposure to alcohol, drugs, or other toxins.trauma during birth, such as oxygen deprivation or premature delivery.inherited disorders, such as phenylketonuria (PKU) or Tay-Sachs disease.chromosome abnormalities, such as Down syndrome.More items…

How do you diagnose mental retardation?

The diagnosis is made based on the results of testing cognitive abilities (intelligence) and adaptive skills (how a child functions in everyday activities). A psychologist generally administers the cognitive testing. The psychologist or developmental pediatrician may also use a test to determine adaptive skills.

What are the prevention of mental retardation?

Health and family planning, recognition of “at risk” situations, genetic counseling, prenatal care, antenatal diagnosis, neonatal screening and pediatric care are just a few of the preventive actions to safe-guard the birth of normal children and secure normal mental development.

What are the common characteristics of persons with mental retardation?

Intellectual disability (ID), once called mental retardation, is characterized by below-average intelligence or mental ability and a lack of skills necessary for day-to-day living. People with intellectual disabilities can and do learn new skills, but they learn them more slowly.

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 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 do they call mental retardation now?

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

How common is mental retardation?

Prevalence. Mental retardation is present in about 2 to 3 percent of the population. It can be defined as cognitive ability that is markedly below average level and a decreased ability to adapt to one’s environment. The onset of the condition occurs during the developmental period, i.e., gestation through age 18 years.

How do I know if my child has intellectual disability?

How Do I Know If My Child Has an Intellectual Disability?Sit up, crawl, or walk later than other children.Learn to talk later or have trouble speaking.Have trouble understanding social rules.Have trouble seeing the consequences of their actions.Have trouble solving problems.Have trouble thinking logically.