health

The causes of dyslexia are not completely understood but are thought to
be related to differences in the structure and functioning of the brain.
Dyslexics appear to process information in a different part of the brain
than nondyslexics. Although the condition has not yet been conclusively
traced to specific genes, it is known to run in families. In 2005,
researchers identified a region on chromosome 6 as possibly related to
dyslexia, but this finding has not yet been verified.
One surprising finding, reported by a team of researchers at Hong
Kong University in 2008, is that the part of the brain affected by dyslexia
appears to differ according to the child’s primary language. The
researchers used magnetic resonance imaging (MRI) to compare a group
speak Chinese. The scientists found that the English speakers use a different
part of the brain when reading from that used by the Chinese students.
The difference is apparently related to the fact that English is an
alphabetic language whereas Chinese uses symbols to represent words.

In addition to having trouble associating letters with sounds and
forming memories for words, children with dyslexia may have some of
the following problems with learning:

• Learning to speak.
  
• Organizing thoughts and ideas into clear written and spoken
  language.
  
• Memorizing number facts, such as the multiplication tables.
  
• Reading quickly enough to understand what is being read. Some
  children with dyslexia read so slowly that they cannot remember
  the beginning of a sentence by the time they reach the end of it,
  particularly if it is a long and complicated sentence.
  
• Making their way through longer reading assignments.
  
• Spelling words correctly.
  
• Trouble with making rhymes.
  
• Learning foreign languages, which involves a basic understanding
  of grammar and the parts of speech.
  
• Performing mathematical calculations correctly.
  Diagnosis