Down's syndrome

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Down's syndome is a chromosoal disorder caused by having 3 copies of chr an extra chromosome on chromosome 21 (referred to as trisomy 21), giving a total of 47 chromosomes instead of the normal 46 in humans. This extra chromosome copy affects how the brain and body develops, thus affecting both physical development and intellectual ability. Although individuals with Down's syndrome behave and look similar, their intellectual capability varies from mild to moderately low. 
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Down's syndome is a chromosoal disorder caused by having 3 copies of chr an extra chromosome on chromosome 21 (referred to as trisomy 21), giving a total of 47 chromosomes instead of the normal 46 in humans. This extra chromosome copy affects how the brain and body develops, thus affecting both physical development and intellectual ability. Although individuals with Down's syndrome behave and look similar, their intellectual capability varies from mild to moderately low.   
  
 
=== Types  ===
 
=== Types  ===
  
There are three main types of Down's syndrome
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There are three main types of Down's syndrome  
  
=== Causes ===
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=== Causes ===
  
=== Typical characteristics ===
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=== Typical characteristics ===
  
*Flat face
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*Flat face  
*Short neck
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*Short neck  
*Abnormally shaped ears
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*Abnormally shaped ears  
*Poor muscle tone
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*Poor muscle tone  
 
*Small hands and feet
 
*Small hands and feet
  
=== Symptoms ===
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=== Symptoms ===
  
*Heart disease
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*Heart disease  
*Coeliac disease
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*Coeliac disease  
*Eye problems
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*Eye problems  
*Hearing problems
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*Hearing problems  
*Skeletal intestinal problems
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*Skeletal intestinal problems  
*Dementia
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*Dementia  
 
*Thyroid dysfunction<br>
 
*Thyroid dysfunction<br>
  
=== Diagnosis ===
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=== Diagnosis ===
  
=== Treatment&nbsp; ===
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=== Treatment&nbsp; ===
  
=== Related conditions and disorders ===
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=== Related conditions and disorders ===
  
 
=== References<br>  ===
 
=== References<br>  ===
  
 
<references /><br>
 
<references /><br>

Revision as of 23:18, 30 November 2015

Down's syndome is a chromosoal disorder caused by having 3 copies of chr an extra chromosome on chromosome 21 (referred to as trisomy 21), giving a total of 47 chromosomes instead of the normal 46 in humans. This extra chromosome copy affects how the brain and body develops, thus affecting both physical development and intellectual ability. Although individuals with Down's syndrome behave and look similar, their intellectual capability varies from mild to moderately low. 

Contents

Types

There are three main types of Down's syndrome

Causes

Typical characteristics

Symptoms

Diagnosis

Treatment 

Related conditions and disorders

References


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