While it is possible to carry a PDD/ASD, ADHD, and a specific anxiety diagnosis concurrently...it would usually not be diagnosed that way. Anxiety, compulsions, rigidity, social anxiety, and oversensitivity are often components of the PDD and ASD...as is inattention, restlessness, hyperactivity, and poor impulse control.

Fleshing out the PDD/ASD side will help tremendously in determining which lens to view the anxious/ADHD behaviors.