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Many factors can cause mental retardation. Known causes include genetic conditions, metabolic errors, and chromosomal abnormalities. Genetic conditions include phenylketonuria, hypothyroidism, and Tay-Sachs disease. Genetic conditions may be inherited or acquired. In addition to genetic conditions, mental retardation can be caused by trauma, poor nutrition, and infections during or after birth.
IQ ranges from 35-40 to 50-55
In the DSM-IV, a significant limit in intellectual functioning is an IQ that is two standard deviations below the mean. The DSM-IV TR has an IQ of approximately 70. However, because of the standard error of intelligence tests, it is not unusual for IQ scores to vary.
Mental retardation, also called intellectual disability, is a serious neurological syndrome that affects one to three percent of the general population. It is a disorder that limits a person's adaptive functioning, such as speech, memory, and problem-solving abilities. In addition, it is often accompanied by a number of genetic abnormalities.
The IQ ranges from 35-40 to 50-50 for individuals with MR. There are three main types of MR: mild, moderate, and severe. In general, the IQ score of a child with mild to moderate MR is higher than those with severe or profound MR. In addition, a person with mental retardation is likely to experience language deficits, sensory impairments, and psychiatric disorders. These disorders are common and tend to increase with the severity of the condition.
Neural tube defect causes mental retardation
A neural tube defect occurs when the development of a baby's central nervous system fails. In these instances, the two neural folds fail to fuse in the midline, which results in the formation of a tube that attaches the brain to the rest of the body. It affects about one in every 1,000 babies. It can result in serious conditions such as hydrocephalus and even paralysis. Surgery to correct the defect is usually required.
There are two types of neural tube defects. One is anencephaly, in which the neural tube does not close properly at the base of the skull. As a result, the baby's brain is not fully developed and they usually die in the womb or shortly after birth. Another is called encephalocele, in which a part of the brain pokes through the skull. Infants with this type of neural tube defect may need multiple surgeries to correct the problem.
Children who are diagnosed with mental retardation often show many signs and symptoms of the condition, which can range from social, communication, and academic challenges. Children with neurological disorders can also suddenly show signs of cognitive impairment and adaptive difficulties. Treatment for mental retardation can help children with mild to moderate levels of retardation to become independent, self-sufficient, and live in a community.
Mental retardation, also known as intellectual disability, is a disability that affects a person's ability to learn, care for oneself, and meet societal expectations. It typically occurs before the age of 18 and is caused by genetic and environmental factors. It is believed that 30 to 50 percent of cases are caused by causes that are not well understood. Some examples include Fragile X Syndrome and Down syndrome.
Legal protections for mental retardation are an important part of the mental health field. In the past, people with mental retardation were often treated as untrainable, dangerous members of society who should be isolated from society. They were often institutionalized in large custodial institutions. Today, these people have rights to basic necessities, such as food, clothing, and shelter. However, they still face discrimination and abuse based on misconceptions and stereotypes.
The definition of mental retardation has changed. Prior to the ADA, individuals with intellectual disabilities were considered "mentally retarded." This changed with the passage of the Americans with Disabilities Act (ADA), which mandated States to change their laws to reflect the new terminology.
The United States and Sweden share substantial similarities and differences in prevalence of mental retardation. However, a comparison of the two countries' prevalence rates of the disorder can be difficult. Although both countries have high rates of child mortality, the difference in the rates of child mortality in the two countries may explain the lower prevalence rates of mental retardation in the former. Prevalence is the total number of cases of the condition within a population during a given period.
Mental retardation is characterized by a delayed intellectual development and an inability to perform complex cognitive tasks. It can also affect motor skills and social behavior. Its prevalence rate has traditionally been quoted at one percent of the young population. The aim of this study is to determine the prevalence of mental retardation in Recife, using basic data indicators, which are a part of the health information system of Brazil.
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