The difference between developmental dyslexia and dyslexia

Hi Patty,
The term developmental Dyslexia, is a mis-used term.
It's only value is in highlighting that all children's brain processes, dont develop at precisely the same rate. What one child can do at age 5, another might not be able to do until age 7.
Which relates to the whole problem of diagnosing very young children.
Where it may be a functional difficulty, or perhaps it is just delayed development.
This is a major dilemma, where early intervention is vital for a functional difficulty, but is unhelpful when it is simply delayed development. Which just needs time to develop.'
Across the spectrum of Learning Difficulties, when to diagnose, is a question that doesn't have a real answer?
Geoff,