Old vs new
Add was the designation for the disorder in the dsm-iiir, while the current (dsm-iv tr) & only approved designation is ad/hd, (enter subtype here).
There are five designations: 1) adhd
, predominantly hyperactive-impulsive type. 2) adhd, predominantly inattentive type. 3) adhd, combined type. 4) ad/hd persistent into adulthood. 5) ad/hd, not otherwise specified. http://www.ritalindeath.co.