SPD versus PDD?
How do professionals/diagnosticians determine whether a child has SPD or PDD? I realize that almost all kids on the spectrum have sensory issues (i.e., a dual diagnosis is possible) and that not all kids with SPD are autistic; however, there is so much overlap in the symptoms across the two disorders. How does one determine whether a child has both disorders or just one - and if only one, then which? The difference(s) between classic autism and SPD seem more apparent. But children on the milder end of the spectrum - or those with PDD - seem tougher to differentiate from SPD. Please help!