+1(514) 937-9445 or Toll-free (Canada & US) +1 (888) 947-9445
I think you mean PR visa (the absolute requirement to apply for citiziship) it depends on the degree of the disorder, do you have MR?
 
Hi, I am canadian, born but i have left canada for 2 decades now (UK). My child has citizenship card.
 
comeback said:
Hi, I am canadian, born but i have left canada for 2 decades now (UK). My child has citizenship card.

No - your child cannot be refused citizenship due to autism.