The term “comorbidity” describes two or more disorders or illnesses occurring in the same person. They can occur at the same time or one after the other. Comorbidity also implies interactions between the illnesses that can worsen the course of both.
Many individuals who develop substance use disorders (SUD) are also diagnosed with mental disorders, and vice versa.
A report produced by NIDA provides definitions, treatment options and barriers that might prevent people receiving the help they need, and the infographic summarises data on the comorbidity between substance use and mental disorders and the rates at which people get treatment for these conditions.