There are number of different definitions of dyslexia. The following is the definition given by the British Dyslexia Association (BDA).

Dyslexia is a specific learning difficulty that  mainly affects the development of literacy and language related skills. It is likely to be present at birth and to be life-long in its effects. It is characterised by difficulties with phonological processing, rapid naming, working memory, processing speed, and the automatic development of skills that may not match up to an individual's other cognitive abilities. It tends to be resistant to conventional teaching methods, but its effect can be mitigated by appropriately specific intervention, including the application of information technology and supportive counseling.

The following are some indicators of dyslexia:

  • A family history of dyslexia/reading difficulties
  • Difficulties in clapping a simple rhyme
  • Decoding words
  • Memorising tables, alphabet, formulas etc.
  • Writing letters and figures the wrong way around
  • Difficulties with reading and spelling
  • Confuses ‘b’ and ‘d’ and words such as ‘no/on’
  • Poor concentration
  • Trouble listening
  • Takes longer than average to do written work
  • Frustration and low self-esteem
  • Slow processing speed of verbal or written information
  • Difficulties getting ideas down on paper
  • Organisation
  • Needing instructions repeated.