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According to the Diagnostic & Statistical Manual of Mental Disorders (4th edition) (the most widely used diagnostic criteria for ADHD), the ADHD condition can be broken down into 3 sub-categories:
attention deficit/hyperactivity disorder: combined type
attention deficit/hyperactivity disorder: predominantly inattentive
attention deficit/hyperactivity disorder: predominantly hyperactive or impulsive -
Hippocrates described a condition that seems to be compatible with what we now know as ADHD