The attention deficit hyperactivity disorder (ADHD) is one of the most common diagnosis in child psychiatry, and persists so often in adulthood. The symptoms of ADHD are very different in adults, with less hiperactivity and a slight decrease in impulsiveness and there's a high rate of comorbidity, such as drug addiction, anxiety and personality disorders, so diagnosing ADHD in patients with substance use disorder is a complicated process in which a screening tool may be useful, for example, the ‘Adult ADHD Self- Report Scale’ (ASRS v1.1), proposed by the WHO. The use of structured interviews, together with a systemised evaluation of possible comorbid disorders, makes it easier to reach a correct differential diagnostic. So, it presents a special interest given to aspects concerning epidemiology, diagnosis, progression and treatment.

We want to know more about the relationship between the presence of symptoms consistent with ADHD in patients who are receiving ambulatory treatment for abuse/dependence cocaine in the Addictive Behavior Unit of Albacete and their sociodemographic characteristics, so we will realized an observational, descriptive and cross-sectional study during a period of one month, using the ‘Adult ADHD Self- Report Scale’ (ASRS v1.1). The conclusion will be focused on the importance of screening for ADHD symptoms in patients with a diagnosis of substance disorders and propose interventions believed helpful in improving management of ADHD and outcome.