The recent, highly publicized killings of prolific actor and director Rob Reiner and his wife, producer Michele Singer Reiner, in their Los Angeles home, allegedly by their son, Nick Reiner, have left the public distressed, pondering how such an event could occur.
One way to help understand this is to look at the role of Nick Reiner’s alleged diagnoses of co-occurring disorders (COD), including schizophrenia and substance use disorder (SUD). This is a relatively new area of diagnostic exploration, examining when individuals have both a mental health diagnosis and a SUD. According to the Substance Abuse and Mental Health Services Administration’s (SAMHSA) 2024 National Survey on Drug Use and Health (NSDUH), approximately 21.2 million adults had a COD.
The combination of these disorders can pose great difficulty for patients and providers. COD can interact, and one can worsen the other, causing treatment and diagnosis to be complicated. This included combined drug interaction. For example, combining medications used for treating SUDs with anxiety treatment medications—such as benzodiazepines—can have serious adverse effects, according to SAMHSA.
In my 17-year career in the field of opioid use disorder (OUD) treatment, I have frequently encountered COD—in fact, it was the rule rather than the exception. The good news is that recent studies on treating COD have yielded promising advances toward improved outcomes, with some evidence showing that the treatment of both conditions at the same time, often referred to as “integrated care,” can help reduce risks of accompanying severe health and social issues, including homelessness.
Integrated treatment for COD can be enhanced by addressing both conditions at the same time using a variety of therapies, including cognitive behavioral therapy and dialectical behavior therapy. Still, it is important to note that most of my patients with COD found relative stability, particularly those who engaged in integrated care. Even then, many would struggle, but many found ways to move forward through their COD.
The federal organization SAMHSA offers a helpful view, looking at the comparison of related mental health disorders with SUD.
We may understand the risks of COD, but it does not make understanding what happened to the Reiner family any easier. As I think back to my patients with COD, I can’t recall any outcome as catastrophic. Such a tragedy is difficult to understand or even fathom, and underscores the complexity of COD. Additionally, this event should also remind us about the complexity of working with patients with COD, when in fact there may be many other medical and mental health overlays at play for such patients.
Through it all, friends, families, and medical providers can still focus on developing their understanding of COD, on creating partnerships with COD patients, and on using community resources to assist such patients in finding stability.
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