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Disordered Reading

August 20th, 2017


Show the patient a list of words and ask them to read the words out loud, or ask them to read a few sentences from a newspaper.
  • Interpretation

  • Pure alexia: reading of words letter-by-letter.
  • Surface dyslexia: ability to phonetically sound out words (breed, steam), but difficulty reading words with irregular spelling (debt, colonel, broad, steak).
  • Phonological dyslexia: inability to read non-words (neg, bluck, deak) with otherwise normal reading of words.
  • Deep dyslexia: semantic errors (e.g. reading the word 'table' as 'chair' or 'street' as 'road'), and inability to read plausible non-words (neg, bluck, deak).Stroke, traumatic brain injury
  • Neglect dyslexia: the patient omits or substitutes part of a word, especially at the beginning of the word. For example, island / land or fish / dish.Dominant hemispheric damage
  • Note

  • The term 'dyslexia' is colloquially used to denote 'developmental dyslexia', which is a global difficulty in reading beginning in childhood that may progress to adulthood. The dyslexias identified above are specific defects that are generally acquired rather than developmental.
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