Just wondered what's the difference? I am aware what the difference is in terms of there being a long term motor difficulty if it is CP, but in practical terms how do you tell one from the other when they are small? My DS1 has developmental delay and all his motor function has been quite badly affected by low tone, in exactly the way you mums with a dx of CP describe (have been reading Jenk's thread about her DD). He does also have speech and language delay, and his comprehension is over a year behind. Is this the difference?