A.C.
Hi~
What kind of processing disorder? Auditory? Sensory? Visual? The type of disorder will determine who you see.
For example:
Sensory processing = pediatric occupational therapist
Central auditory processing disorder (needs to by 8 yrs old to diagnose): 1st see pediatric audiologist then see pediatric speech pathologist
Visual Perceptual processing = pediatric occupational therapist and pediatric developmental optometrist
let me know if you have questions.