[High risk for children with DAMP/ADHD to become addicts later in life]

The prevalence of attention deficit hyperactivity disorder (ADHD) and of the overlapping condition, deficit in attention, motor control and perception (DAMP), among children of early school age is approximately 5 per cent (1.5% being severe cases). Boys are more commonly affected than girls. The symptoms continue to be disabling at 20 years of age in 50 per cent of cases, and social maladjustment is common. Half of the young boys develop oppositional defiant disorder (ODD), very often progressing to conduct disorder (CD) and antisocial personality disorder (ASPD). Low socio-economic status, parental mental disorder, and persistence of DAMP/ADHD symptoms are all predictors of the development of CD/ASPD. Prospective studies of children with DAMP/ADHD have shown them to be characterised by a high level of alcohol and/or drug abuse comorbidity, particularly the subgroup progressing to CD/ASPD. Conversely, studies of drug abuse and of alcohol abuse series have shown them to be characterised by a high level of DAMP/ADHD comorbidity. Approximately one in five alcoholics has or has had DAMP/ADHD, a comorbidity probably even more pronounced among type II alcoholics. Approximately every third substance-abuser has or has had DAMP/ADHD. The need of more persevering support and treatment efforts for the well-defined category of boys at high risk is emphasised. Better awareness, active diagnosis and treatment of adults with persisting DAMP/ADHD is also warranted