AABERRANT BEHAVIOR: Irregular behavior that deviates from what is considered normal.The use of the term implies that the behavior in question is performed in secret and mainly for reasons of selfinterest, as for example in the case of certain unusual sexual practices.ADAPTIVE BEHAVIOR: A type of behavior that is used to adjust to another type of behavior or situation.This is often characterized by a type of behavior that allows an individual to change an unconstructive or disruptive behavior to something more constructive.ADDICTION-BASED IMPAIRMENT: Brain damage is a common and potentially severe consequence of long-term, heavy substance abuse that specifically involves the impairment of cognitive functioningmental activities related to acquiring, storing, retrieving, and using information.ADDICTION MEDICINE: A medical specialty that deals with the treatment of addiction.Incorporated within the specialty are the processes of detoxification, rehabilitation, harm reduction, abstinence-based treatment, individual and group therapies, oversight of halfway houses, treatment of withdrawal-related symptoms, acute intervention, relapse prevention, and long-term therapies designed to fortify recovery.