What Are The Main Causes 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 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 is mild mental retardation?

Definition. Mild mental retardation is defined as significantly subaverage intellectual ability, which ranges between 50–55 and 70, and concurrent delays in adaptive functioning that present prior to the age of 18.

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.”

How can we prevent mental retardation?

7 Tips to Prevent Mental RetardationFind Out About Down Syndrome. … Promptly Treat Phenylketonuria (PKU) … Abstain From Alcohol During Pregnancy. … Help Your Kid Avoid Lead Poisoning. … Stay Healthy During Pregnancy. … Report Child Abuse and Neglect.

What are the causes of intellectual disability?

The most common causes of intellectual disability are:Genetic conditions. These include things like Down syndrome and fragile X syndrome.Problems during pregnancy. … Problems during childbirth. … Illness or injury. … None of the above.

What is the leading cause of mental retardation in newborns?

Fetal alcohol syndrome is now leading cause of mental retardation.

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).

How do I know if my child has an 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.

Is mental retardation 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. FXS is estimated to affect 1 in 2,500 males and 1 in 8,000 females.

Is ADHD an intellectual disability?

Some mental health, neurodevelopmental, medical and physical conditions frequently co-occur in individuals with intellectual disability, including cerebral palsy, epilepsy, ADHD, autism spectrum disorder and depression and anxiety disorders.

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.

What are the biological causes for mental retardation?

Biological risk factors for mental retardation include malnutrition; exposure to toxins such as lead, alcohol, and PCBs, and being born at LBW. Social in¯ uences from homes, schools, and cultures are related to intelligence and mental retardation although the direction of effect is difficult to determine.

What is the leading known cause of mental retardation quizlet?

Down’s is a form of mild mental retardatioin. Significance of Chromosome Abnormalities. These are the single most common cause of moderate to severe mental retardation. Down Syndrome is the most common disorder resulting from these abnormalities.

At what age is mental retardation diagnosed?

When is the diagnosis made? The onset of mental retardation is in childhood, before 18 years of age. The diagnosis is generally made after infancy, between the preschool and school-age periods. Sometimes the diagnosis may be made later, at the time when a thorough assessment is performed.

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 types of mental retardation?

Mental retardation comprises five general categories: borderline, mild, moderate, severe and profound. Categories are based on scores obtained through use of age-standardized tests of cognitive ability (Table 1).

Does mental retardation get worse with age?

What mental changes occur, as adults with mental- retardation grow older? Like the general population after age 50, people with mental retardation, who do not have Down syndrome, experience a gradual decline in overall intellectual capacity, a decrease in their speed of recall, and slower general cognitive functioning.