Learning disability – 1

Published on 23/05/2015 by admin

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Last modified 23/05/2015

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22 Learning disability – 1

Regi T. Alexander

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1. The prevalence of learning disability (LD) is 2%.
2. Larger sibships in Social class IV are associated with an increased risk of LD.
3. If a child with LD and an autistic disorder uses few words before the age of 6 years, they are likely to remain mute.
4. Impaired prosody is a feature of Asperger syndrome.
5. Language development is delayed in Asperger syndrome.
6. If a couple has one child with Down’s syndrome due to translocation, the risk of a subsequent child with the syndrome is about 1%.
7. Down’s syndrome is the most common cause of learning disability.
8. Patients with Down’s syndrome have a high risk of vascular dementia.
9. Down’s syndrome is associated with hypertension.
10. Language development is normal in Down’s syndrome.
11. A defective gene which leads to the Fragile X abnormality has been identified.
12. Fragile X syndrome almost never occurs in females.
13. Survival into adolescence is rare for patients with Hunter’s syndrome.
14. Klinefelter syndrome occurs in 1 in 1000 live births.
15. Lesch–Nyhan syndrome is a sex-linked recessive disorder.
16. Metachromatic leucodystrophy is an X-linked recessive condition.
17. If a healthy couple has a baby with phenylketonuria, the chances of the next baby having the same condition are less than 1%.
18. People with Prader–Willi syndrome have an ‘elfin’ face.
19. Half the patients with Sturge–Weber syndrome may not have mental retardation.
20. Tuberous sclerosis complex may be due to a new mutation.
21. Most patients with Turner’s syndrome have learning disabilities.
22. William’s syndrome is due to a mutation on chromosome 13.
23. Irritability is a common symptom of depression in LD.
24. Schizophrenia is rare in people with LD.