co-occur
verb
co-oc·cur
ˌkō-ə-ˈkər 
co-occurred; co-occurring
: to occur at the same time or in the same place
symptoms that often co-occur
co-occurring species
… certain words co-occur or collocate regularly with certain other words.—
Morton Benson
Morton Benson
co-occurrence
noun
plural co-occurrences
co-occurrence of the reactions
co-occurrence of two diseases
Examples of co-occur in a Sentence
the chronic depression that so often co-occurs with drug abuse
Recent Examples on the Web
That help is critical since the disorder is associated with co-occurring mental health issues, a lower quality of life and life expectancy, and higher rates of disability, according to the National Institute of Mental Health.
—Kristen Rogers, CNN Money, 2 Sep. 2025
Another key point is that overdose is disproportionately impacting vulnerable groups including women, people of color, rural populations and individuals with co-occurring mental illness.
—Lipi Roy, Forbes.com, 28 Aug. 2025
Currently, research is shifting to examine not only how the collaborative care model can address substance abuse symptoms but also the co-occurring mental health conditions.
—MSNBC Newsweek, 18 Aug. 2025
Postprandial hypotension is common in older adults and often co-occurs with orthostatic hypotension.
—Colleen Doherty, Verywell Health, 16 Aug. 2025
Excessive alcohol use is linked to cognitive decline and neurodegenerative diseases such as Alzheimer’s, and mental health conditions such as anxiety and depression often co-occur with high levels of drinking.
—Cassie Shortsleeve, SELF, 3 Jan. 2025
Many individuals with autism also experience co-occurring health issues such as attention-deficit/hyperactivity disorder, seizures, or chronic gastrointestinal problems.
—Bloomberg, The Mercury News, 27 Dec. 2024
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Kristen Rogers, CNN Money, 2 Sep. 2025
Another key point is that overdose is disproportionately impacting vulnerable groups including women, people of color, rural populations and individuals with co-occurring mental illness.
—Lipi Roy, Forbes.com, 28 Aug. 2025
Currently, research is shifting to examine not only how the collaborative care model can address substance abuse symptoms but also the co-occurring mental health conditions.
—MSNBC Newsweek, 18 Aug. 2025
Postprandial hypotension is common in older adults and often co-occurs with orthostatic hypotension.
—Colleen Doherty, Verywell Health, 16 Aug. 2025
Excessive alcohol use is linked to cognitive decline and neurodegenerative diseases such as Alzheimer’s, and mental health conditions such as anxiety and depression often co-occur with high levels of drinking.
—Cassie Shortsleeve, SELF, 3 Jan. 2025
Many individuals with autism also experience co-occurring health issues such as attention-deficit/hyperactivity disorder, seizures, or chronic gastrointestinal problems.
—Bloomberg, The Mercury News, 27 Dec. 2024
Cite this Entry
“Co-occur.” Merriam-Webster.com Dictionary, Merriam-Webster, https://www.merriam-webster.com/dictionary/co-occur. Accessed 5 Sep. 2025.
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