Brief Description
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. Learn more
Related Resources
Attention
Due to the lapse in government funding, the information on this web site may not be up to date, transactions submitted via the web site may not be processed, and the agency may not be able to respond to inquiries until appropriations are enacted. Updates regarding government operating status and resumption of normal operations can be found at
Looking for Treatment?
Use the SAMHSA Treatment Locator or 1-800-662-HELP.
Helpline open during government shutdown
Research Report
Comorbidity: Addiction and Other Mental Illnesses
Introduces a report that focuses on the topic of comorbid drug use disorders and other mental illnesses, a research priority for NIDA.
Other Articles of Interest
Featured Publication
Drugs, Brains, and Behavior - The Science of Addiction
As a result of scientific research, we know that addiction is a disease that affects both brain and behavior.




