Many rehabilitation programs in Vashon, Washington address persons with co-occurring mental and substance abuse disorders. A person who struggles with a psychological disorder(s) and substance abuse requires to work through both issues concurrently. Failing to address the client's psychological disorder(s) during their drug treatment will leave them susceptible to relapse once they leave treatment. Issues with mood disorders, anxiety disorders and other mental disorders (schizophrenia, personality disorders, etc.) will come up once back in their day to day life. If the individual does not have a grip on how to handle their mental disorder they will probably fall back into their old ways of abusing drugs or alcohol as a means of coping and self-medicating.