Collaborative approach HIV and mental illness comorbidity

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Emerging evidence suggests  that a collaborative approach to the care of HIV patients with serious mental illness – with HIV treatment and mental health services offered together in one location – may be a viable, effective strategy for managing this comorbidity.

The comorbidity of HIV and a serious mental illness such as bipolar disorder or schizophrenia presents multiple challenges for patients and clinicians. Risk factors for HIV acquisition, issues related to treatment engagement – including the choice of therapeutic regimens and medication adherence – and stigma associated with both conditions all complicate the treatment of this population.

“The questions about what comes first [HIV or mental illness] is a difficult one,” Dr Michael B. Blank is quoted in Healio as saying. Blank is affiliated with the HIV prevention research division and serves as associate professor of psychology in psychiatry at the Perelman School of Medicine at the University of Pennsylvania. “It’s bidirectional.”

Both Blank and Dr Conall O’Cleirigh, assistant professor of psychology at Harvard Medical School and director of behavioural medicine at Massachusetts General Hospital, identified the time at which illnesses like schizophrenia and bipolar disorder first present – late adolescence and early adulthood – as a contributing factor to the higher prevalence of HIV in this population. “That’s usually the time when the person is first majorly stressed out,” O’Cleirigh said. “Those can be times when people are very vulnerable to HIV, particularly young gay and bisexual men. The difficulty with mental health issues is that they’re not just associated with an increased risk for risky sex that might expose them to HIV. They’re also related to a lot of other things that are related to increased risk for HIV, like substance abuse and homelessness. A lot of people who aren’t successfully in treatment for their mental health issues may well be self-medicating.”

Individuals with a serious mental health issue often lead “chaotic lives,” according to Blank, and homelessness is common for these patients, which may lead to using sex as payment for food or a place to stay. Further complicating matters is the fact that these patients “don’t even necessarily define themselves as trading sex,” he continued. “They’re just having sex with the person who’s letting them sleep in their apartment or on their couch or feeding them. They don’t even necessarily conceptualize themselves as being at risk or engaging in sex work.”

Up to 23% of patients with a serious mental illness are estimated to have HIV, and treatment of co-infected patients is complex, according to Blank and O’Cleirigh. Under-treatment, or lack of treatment, of a mental health issue can affect adherence to ART, they said, and stigma also plays a role.

“Depression does its damage through withdrawal,” O’Cleirigh said. “People don’t just withdraw from pleasurable activities with their friends and families. They also withdraw from their own health care and from sustaining relationships with their providers. On the other end, people who are dealing with a full-blown manic episode feel so good that they think there can’t be anything wrong with them.”

Similarly, individuals with schizophrenia who experience psychotic episodes “are not going to be reliably identifying themselves as people who need to care,” according to O’Cleirigh. These patients also may be suspicious and distrustful of providers and the medications prescribed to them.

The data regarding treatment adherence among patients with HIV and mental health illness are not definitive. A systematic review of 82 reports, published in 2012, found an association between depression and non-adherence to ART, but data pertaining to the impact of other specific mental disorders such as anxiety, bipolar, psychotic and personality disorders on treatment adherence were “insufficient and inconsistent,” researchers said.

Anecdotal evidence shows that patients with a serious mental illness actually may be more adherent to ART. “People presume that patients with severe mental illnesses are going to be less adherent to ART,” Blank said. “There is some evidence that they may actually adhere as well as others. People have had an acute exacerbation of a severe mental illness and are admitted to inpatient psychiatric units and still have undetectable viral loads. And we would not have thought that initially.”

Treatment for serious mental illnesses itself may partially explain increased adherence to ART, according to O’Cleirigh. “The treatment cascade for HIV is complex. The treatment cascade for bipolar disorder is also pretty complex,” he said. This may enable patients who are effectively managing a serious mental illness to utilize those skills in managing HIV.

Stigma is another “really important and central issue” in the treatment of patients with both conditions, according to O’Cleirigh. Individuals may feel stigmatised by the people around them and have personal opinions that reflect stigmatised attitudes about HIV and mental illness. “Stigma can really get in the way of moving forward in an adaptive way of looking after yourself and keeping yourself safe and engaged in care – not just HIV care but mental health care as well,” O’Cleirigh said.

Mental illness is associated with its own stigma, as is HIV. As a result, the impact of stigma may be compounded among comorbid patients. “People often assume that, because people with mental illnesses are stigmatised, they can’t feel additional stigma for having HIV,” Blank said. “I don’t think that’s true. I think that there are separate and interacting stigmas for both mental illness and HIV.”

An integrated approach to treatment, where physical and mental health care are delivered together, may be the most effective tactic for managing these patients.

“I think the barrier, in many places, is that care is not integrated physically,” said Dr Bruce R. Schackman, the Saul P Steinberg distinguished professor of healthcare policy & research at Weill Cornell Medicine and director of the Centre for Health Economics of Treatment Interventions for Substance Use Disorder, HCV, and HIV (CHERISH). “And the provision of benefits is not integrated. In many cases, insurance benefits for mental health are administered separately from medical benefits.”

The report says the results of two recent studies highlight the promise that this approach may have for these patients. Blank and colleagues conducted a study examining the efficacy of community-based care management for patients with HIV and serious mental health illnesses, coordinated by an advanced practice nurse for 12 months. The positive outcomes observed in the intervention group, which included reductions in viral load as well as improvements in CD4 count and health-related quality of life, were sustained at 24 months.

Project Hope was a three-arm randomised controlled trial conducted among patients with HIV and substance abuse issues who were not fully engaged in care. The study evaluated 6 months of patient navigation or patient navigation plus contingency management vs. treatment as usual with the aim of increasing viral suppression rates at 12 months. The patient navigation group participated in sessions in which navigators encouraged treatment for HIV and substance use and provided “instrumental support,” including scheduling and attending appointments with patients. Participants in the patient navigation plus contingency management group received navigation as well as a financial incentive of up to $1,160 for target behaviours, including attending visits for HIV care, picking up medications, receiving substance abuse treatment, providing drug-free urine samples and achieving viral suppression.

Results demonstrated the short-term efficacy of both patient navigation and patient navigation plus contingency management, but the impact was temporary and not maintained at 12 months.

“We wouldn’t expect a diabetic who has mental illness and is homeless to be able to manage all those issues on their own 6 months after we started giving them insulin. The results of the Project Hope trial showed that you need ongoing, intensive support for patients with HIV and a serious mental illness or substance use disorder to keep them engaged,” Schackman said.

O’Cleirigh emphasised the importance of distress tolerance, emotion regulation and social support for these patients, as well as the use of integrated health care teams.

“That kind of approach has some really good promise, where you have a therapy model that’s focused on the most relevant mental health issue and also provides counselling and skills-based training for the health issue. These general things can cut across many of the mental health diagnoses and also provide really excellent platforms for teaching skills to promote, and obtain, health.”

Abstract 1
The heightened risk of persons with serious mental illness (SMI) to contract and transmit human immunodeficiency virus (HIV) is a public health problem. Our objective was test the effectiveness of a community-based advanced practice nurse intervention to promote adherence to HIV and psychiatric treatment regimens call Preventing AIDS Through Health for Positives (PATH+). We enrolled 238 HIV-positive subjects with SMI who were in treatment at community HIV provider agencies from 2004 to 2009. Participants in the intervention group were assigned an advanced practice nurse who provided community-based care management at a minimum of one visit/week and coordinated their medical and mental healthcare for 12 months. A parallel process latent growth curve model using three data points for biomarkers (baseline, 12 and 24 months) and five data points for health related quality of life (baseline, 3, 6, 12, and 24 months) showed moderate to excellent fit for modeling changes in CD4, viral load, and mental and physical SF-12 subscales. Results suggest that positive effects for PATH+ persisted at 24 months; 12 months after the intervention ended. This project demonstrates the effectiveness of a nurse-led, community-based, individually tailored adherence intervention. We demonstrated improved outcomes in individuals with HIV/SMI and regarding health-related quality of life and reductions in disease burden.

Authors
Michael B Blank, Michael Hennessy, Marlene M Eisenberg

Abstract 2
There has been a general recognition of a syndemic that includes HIV/AIDS and serve mental illnesses including schizophrenia, major depression, bipolar disorder, post-traumatic stress disorder, and others. The pathophysiology and direction of effects between severe mental illness and HIV infection is less clear however, and relatively little work has been done on prevention and treatment for people with these complex, co-occurring conditions. Here we present the most recent work that has been published on HIV and mental illness. Further, we describe the need for better treatments for “triply diagnosed persons”; those with HIV, mental illness, and substance abuse and dependence. Finally, we describe the potential drug-drug interactions between psychotropic medications and anti-retrovirals, and the need for better treatment guidelines in this area. We describe one example of an individually tailored intervention for persons with serious mental illness and HIV (PATH+) that shows that integrated community-based treatments using advanced practice nurses (APNs) as health navigators can be successful in improving health-related quality of life and reducing the burden of disease in these persons.

Authors
Michael B. Blank, Seth Himelhoch, James Walkup, Marlene M. Eisenberg

Abstract 3
This is a systematic review of eighty-two published studies investigating the impact of DSM-IV mental disorders on combination antiretroviral therapy (cART) adherence and persistence among persons living with HIV/AIDS (PLWHA). Sixty-two articles examined depression, with 58 % (N = 32/62) finding lower cART adherence and persistence. Seventeen articles examined one or more anxiety disorders, with the majority finding no association with cART adherence or persistence. Eighty percent of the studies that evaluated the impact of psychotic (N = 3), bipolar (N = 5) and personality disorders (N = 2) on cART adherence and persistence also found no association. Seven out of the nine studies (78 %) evaluating the impact of antidepressant treatment (ADT) on cART adherence found improvement. Adherence and depression measurements varied significantly in studies; common research measurements would improve data harmonization. More research specifically addressing the impact of other mental disorders besides depression on cART adherence and RCTs evaluating ADT on cART adherence are also needed.

Authors
Sandra A Springer, Azem Dushaj, Marwan M. Azar

Healio material
AIDS and Behaviour abstract
Current HIV/AIDS Reports abstract
AIDS and Behaviour abstract


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