What is the major cause of intellectual disability?
What is the major cause of intellectual disability?
Several hundred causes have been discovered, but in about one-third of the people affected, the cause remains unknown. The three major known causes of intellectual disability are Down syndrome, Fetal Alcohol Spectrum Disorder (FASD) and Fragile X syndrome.
What are the causes of intellectual 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.
What are the 3 major components of intellectual disability?
What is Intellectual Disability?
- Intellectual functioning (such as learning, problem solving, judgement).
- Adaptive functioning (activities of daily life such as communication and independent living).
What are the risk factors of intellectual disability?
Causes and risk factors for intellectual disability in children and teens
- Prenatal alcohol or drug exposure.
- Contraction of illnesses or infections while in utero.
- Not receiving enough oxygen during birth.
- Suffering head injuries.
- Malnutrition.
- Parental low IQ.
What is the most common genetic cause of intellectual disability?
Fragile X Syndrome: Fragile X is the most common known cause of inherited (genetic) intellectual disability. It affects both males and females, but because the affected gene is on the X chromosome, males are more frequently and severely affected than females.
What causes low IQ in a child?
What are the causes of mental subnormality? Mental retardation could occur due to genetic causes such as metabolic disorders, deficiency of metabolic enzymes, hypothyroidism, syndromes such as Down’s syndrome, Fragile-X syndrome, Prader-Willi syndrome.
What are the most common intellectual disabilities?
5 Most Common Types of Intellectual Disabilities
- Autism. Autism is an intellectual disability affecting the nervous system and the structure and function of the brain.
- Down’s Syndrome.
- Fragile X Syndrome.
- Fetal Alcohol Syndrome.
- Prader-Willi Syndrome (PWS)
What are 5 causes of intellectual disability?
Causes
- Infections (present at birth or occurring after birth)
- Chromosomal abnormalities (such as Down syndrome)
- Environmental.
- Metabolic (such as hyperbilirubinemia, or very high bilirubin levels in babies)
- Nutritional (such as malnutrition)
- Toxic (intrauterine exposure to alcohol, cocaine, amphetamines, and other drugs)
What is the most common genetic cause of intellectual disabilities?
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 are examples of intellectual disabilities?
List of Potential Intellectual and/or Developmental Disabilities:
- ADHD.
- Apert Syndrome.
- Autism.
- Cerebral Palsy.
- Developmental Delay.
- Developmental Hearing Loss.
- Down Syndrome.
- Fetal Alcohol Spectrum Disorder.
