ASSESSMENT OF ADDICTION AND CO-OCCURING DISORDERS2Unit 5 Assignment: Assessment of Addiction and Co-occurring DisordersThis paper will address the assessment of addiction and co-occurring mental health disorders as they pertain to the case of Derek, a 30-year-old Puerto Rican homosexual male. It will analyze the Substance Abuse Subtle Screening Inventory-3 (SASSI-3,), and the appropriateness of use of these assessments with a client of multicultural decent. Next, this paperwill assess the appropriate differential diagnosis as it pertains to Derek and his situation. Finally, it will formulate a provisional diagnosis using the DSM-5 criteria. Derek is currently employed at a prestigious law firm where he is expected to work extended hours. According to the case, he does not sleep much, thinks very highly of himself andhis status, is easily agitated, aggressive and restless most of the time. Derek’s partner, William, has noticed his behavior and planned a vacation for the two of them to get away. While on this vacation Derek was unable to relax, became increasingly aggressive and began lashing out at other guests ending in Derek being hospitalized after an altercation with a patron at a local club. As a result, Derek has been referred to as the crisis worker on call due to his erratic and irrationalbehavior. William also discovers a bag of white powder that he assumes is Methamphetamine and places a call to Derek’s brother. During this conversation, William finds out that Derek experienced a similar problem in college. Assessment ToolsThe Substance Abuse Subtle Screening Inventory (SASSI-3) is a short, self-administered screening that is available in both adult and adolescent versions. It is designed to help in identifying those clients who have a higher probability of developing a substance abuse disorder. This is the third edition of this assessment, comes in paper/pencil, computer and audio tape version and is available in both English and Spanish translations.