National Institutes of Health

Comorbidity

Compassionate middle aged mother comforting stressed upset daughter, sitting together on sofa at home. Kind senior mature mommy supporting soothing frustrated desperate unhappy grownup child.

Photo by © Shutterstock/fizkes

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.

Comorbidity is when a person has two disorders at the same time.

Learn about comorbidity with this infographic

Looking for Treatment?

Use the SAMHSA Treatment Locator or call 1-800-662-HELP (4357).

Featured

This graph shows the percent of co-occuring substance use disorder and serious mental illness in the past year among people aged 18 or older from 2009 to 2015.

Research Report

Common Comorbidities with Substance Use Disorders Research Report

Introduces a report that focuses on the topic of of common physical and mental health comorbidities with substance use...

Media Name: nida_comorbidity_infographic_final-02_0-thumbnail.png

Comorbidity: Substance Use and Other Mental Disorders

This infographic summarizes data on the comorbidity between substance use and mental disorders and the rates at which...

More on this Topic

Related Resources

NIDA COVID-19 Resources
HHS: About the Multiple Chronic Conditions Initiative (U.S. Department of Health and Human Services)
Longitudinal Study of Adolescent Brain Cognitive Development (ABCD Study) (NIDA)
Mental Health and Addiction Insurance Help (U.S. Department of Health and Human Services)
First-Episode Psychosis and Co-Occurring Substance Use Disorders (SAMHSA)
National Institute of Mental Health (NIMH)
CDC - Federal Disaster Mental Health Resources