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Exact percentage is not known. But then at least one cause for developmental dyslexia is known to the contributor. Contributor was treated as third grade citizen in medical community, through out his life time. Because he is not a post graduate in medicine. He never expected that he will ever get a chance to write on such a distinguished site in his life time. So he deliberately and consciously neglected the grammar and spelling aspect of English language. Secondly you are connected to hundreds of students, through out the day by way of SMS, who have been using what is called as SMS language, in which the language is grossly distorted to make the spellings very brief. Now again so much busy in writing that there is no time to learn the English language and grammar.

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11y ago

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