Tag: chronic pain

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First-visit Communication with Doctor Affects Outcomes of Pain Patients

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Chronic pain, defined as daily or significant pain that lasts more than three month, can be complicated to diagnose and treat. Studies have shown that, since chronic pain conditions are clouded with uncertainties, patients often struggle with anxiety and depression – something challenging to for they and their doctors to discuss and manage.

A recent study of 200 chronic neck or back pain sufferers found that effective physician-patient communication during the initial consultation helps patients manage their uncertainties, including their fears, anxieties and confidence in their ability to cope with their condition.

Study leader Charee Thompson, communication professor at University of Illinois Urbana-Champaign, said: “We found that providers and patients who perceive themselves and each other as competent medical communicators during consultations can alleviate patients’ negative feelings of uncertainty such as distress and increase their positive feelings about uncertainties such as their sense of hope and beliefs in their pain-management self-efficacy. Providers and patients successfully manage patients’ uncertainty through two fundamental medical communication processes – informational and socioemotional, each of which can have important clinical implications.”

According to the study, informational competence reflects patients’ abilities to accurately describe their symptoms and verify their understanding of doctors’ explanations and instructions, as well as clinicians asking appropriate questions, providing clear explanations and confirming patients’ understanding. The extent to which doctors and patients establish a trusting relationship through open, honest communication and patients’ feelings of being emotionally supported by the physician reflects socioemotional communication competence.

Thompson and her co-authors — Manuel D. Pulido, a communication professor at California State University, Long Beach; and neurosurgery chair Dr. Paul M. Arnold and medical student Suma Ganjidi, both of the Carle Illinois College of Medicine — published their findings in the Journal of Health Communication.

The current study was based on uncertainty management theory, the hypothesis that people faced with uncertainty about a health condition appraise it and decide whether obtaining information is a benefit or a threat. For example, patients may seek information about the origins of a new symptom to mitigate their anxiety-related uncertainty — or, conversely, they might avoid information-seeking so they can maintain hopeful uncertainty about their prognosis, the team wrote.

The study was conducted at an institute in the Midwest composed of several clinics and programs that treat diseases and injuries of the brain, spinal cord and nervous system. Ranging in age from 18–75, those in the study sample had pain that included but was not limited to their neck, back, buttocks and lower extremities. About 59% of the patients were female. 

Before the consultation, the patients completed surveys rating how they experienced and managed their pain and their certainty or uncertainty about it. They and the providers also completed post-consultation surveys rating themselves and each other on their communication skills. 

The patients rated how well the provider ensured that they understood their explanations and asked questions related to their medical problem. 

To determine if patients’ levels of uncertainty changed, on the pre- and post-consultation surveys the patients ranked how certain or uncertain they felt about six aspects of their pain – including its cause, diagnosis, prognosis, the available treatment options and the risks and benefits of those. The patients also rated themselves on catastrophising – their tendency to worry that they would always be in pain and never find relief.

Patients’ feelings of distress were reduced when they and their physician mutually agreed that the other person was effective at seeking and providing medical information, and when the patients felt emotionally supported by their doctors, the team found.

“Patients’ ratings of their providers’ communication competency significantly predicted reductions in their pain-related uncertainty and in their appraisals of fear and anxiety, as well as increases in their positive uncertainty and pain self-efficacy,” Thompson said. “Providers’ reports of patients’ communication competency were likewise associated with decreases in patients’ pain-related uncertainty and marginally significant improvements in their positive appraisals of uncertainty.”

In a related study, the U. of I.-led team found that, for a subset of spinal pain patients, satisfaction, trust in and agreement with their doctor were strongly associated with the doctors exceeding patients’ expectations for shared decision-making and the quality of the provider’s history-taking and people skills. U. of I. graduate student Junhyung Han was a co-author of that paper, which was published in the journal Patient Education and Counseling. 

The team wrote that providers and patients need to discuss their mutual expectations for testing, medication and treatment, such as which options are worth pursuing and their potential to meet patients’ expectations for pain relief. 

Thompson said that while these studies’ findings highlight the effects that providers’ overall communication skills have on chronic pain patients’ emotions, expectations and attitudes about their condition, the patients’ communication skills matter, too. 

“I wanted to challenge the notion that pain patients are frustrated or ‘difficult’ because they have unrealistic standards,” Thompson said. “No matter how high their expectations are, what seems to matter most to conversation outcomes is the extent to which patients’ expectations are met or exceeded.

“Consultations mark what may be a long, challenging diagnostic and treatment journey for these patients, and they could benefit from learning about therapies and strategies to help them manage their pain and uncertainties,” Thompson said. “Giving them the tools and language to communicate their symptoms and concerns to providers could make their interactions more productive. Learning about the uncertain nature of pain may validate their fears and anxieties, while awareness and education about the various treatment options and therapies such as cognitive behavioural therapy could enhance their coping and dispel feelings of helplessness and fear.”

Source: University of Illinois at Urbana-Champaign

Categories : Lab Tests and Imaging Pain ManagementTags :

Radiology Helps Treat Chronic Pain

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Dr Winter performing a CT-guided interventional procedure. Photo: Supploed

Radiology encompasses more than just imaging. It is a medical field that uses various imaging techniques to diagnose conditions, guide minimally invasive procedures and, much to the relief of agonised patients, treat chronic pain.

‘Traditionally, radiology is known as a modality where causes of pain are only diagnosed’, says Dr Arthur Winter, a radiologist at SCP Radiology. ‘Interventional radiology has changed this. It is a rapidly developing branch of radiology involving minimally invasive procedures.  Pain management procedures are becoming a daily part of busy radiology departments.’

Simply put, interventional radiologists can use precisely targeted injections to intervene in the body’s perception of pain.

Understanding pain

Pain is a signal from the nervous system to let you know that something is wrong in your body. It is transmitted in a complex interaction between specialised nerves, the spinal cord and the brain. It can take many forms, be localised to one part of the body or appear to come from all over.

Pain can be acute or chronic

Harvard Medical School gives an overview of the difference between the two. ‘Most acute pain comes from damage to body tissues. It results from physical trauma such as a sports or exercise injury, a broken bone, a medical procedure or an accident like stubbing your toe, cutting a finger or bumping into something. The pain can feel sharp, aching or throbbing and often heals within a few days to a few weeks.’

In comparison, chronic pain lasts at least two to three months, often long after you have recovered from the injury or illness and may even become permanent. It could also be a result of lifestyle diseases. Symptoms and severity vary and may include a dull ache, shooting, burning, stabbing or electric shock-like pain and sensations like tingling and numbness. Chronic pain can be debilitating and affect your ability to perform activities of daily living.

Interventional pain management

Although some acute pain can be managed with interventions, it is patients with chronic pain that truly benefit. ‘These patients often use high doses of opioid painkillers that may cause nausea, constipation, anorexia and addiction. Other painkillers may also irritate the stomach lining and cause kidney problems,’ says Dr Winter.

An alternative that interventional pain management offers, involves injections called nerve blocks that target very specific nerves.

‘Most of these interventions prevent nerve impulses or pain signals from being transmitted, using long-acting local anaesthetics. The effect is usually temporary but the addition of cortisone – or steroids – often brings longer-lasting relief. In some cases, it could be appropriate to follow the temporary block with neurolysis, which is a permanent disruption or destruction of the target nerves.’

Although nerve blocks and other long-acting pain injections have been done for years, the scope of procedures is evolving fast. The involvement of radiologists has also grown.

Dr Winter explains. ‘Pain management has traditionally been the responsibility of clinicians and anaesthetists. During nerve block procedures, they were typically guided by their knowledge of anatomy or a continuous X-ray technique called fluoroscopy. As ultrasound became more widely available, many anaesthetists learned to do these procedures under ultrasound guidance.

‘These specialists still provide these treatments but, thanks to the availability of specialised imaging equipment, radiologists now have the tools and skill to do procedures under sophisticated image guidance. With CT guidance, some procedures can be performed with great accuracy while avoiding blood vessels and non-target organs,’ says Dr Winter.

‘A lower dose of medication is also needed if the needle is placed accurately next to the target nerves. It is therefore not surprising that this is increasingly becoming a responsibility of interventional radiologists.’

Other procedures where radiologists are involved include targeted Botox injections to treat the symptoms of Piriformis syndrome, epidural cortisone injections for inflammation in the spine and a procedure called epidural blood patch. This is to seal spinal fluid leaks that cause low-pressure headaches.

In conclusion, Dr Winter says chronic pain may cause poor quality of life and depression, often seen in patients with underlying cancer. ‘It is especially these patients who should be considered for interventions. There are, for example, very effective procedures to manage pain caused by pancreatic and pelvic cancers.

‘Specialists like oncologists and neurologists recognise the value of interventional radiology in pain management and work closely with us to support their patients. It is a growing branch of radiology that offers a minimally invasive solution and it’s quite rewarding to see patients regain some quality of life.’

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Researchers Delve into the Roots of Chronic Pain

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A team of researcher have identified a new function for the PIEZO2 protein – in mediating chronic pain hypersensitivity. The research suggests a new target for analgesics and potentially explains why pain medications that target voltage gated sodium channels have been disappointing as clinical targets. The study, led by Oscar Sánchez-Carranza in Professor Gary Lewin’s lab at the Max Delbrück Center, was published in the journal Brain.

“There’s a good correlation between chronic pain and the sensitisation of pain receptors, called nociceptors, in humans,” says Lewin. “This study implicates the PIEZO2 channel as a critical mediator of sensory signals that maintain chronic pain.”

PIEZO2 protein forms an ion channel in human sensory receptors. Previous studies have shown that the ion channel is involved in communicating the sense of touch to the brain. People with “loss-of-function” mutations in the PIEZO2 gene are hypo-sensitive to gentle touch or vibration. By contrast, patients with “gain-of-function mutations” in PIEZO are often diagnosed with complex developmental disorders. But whether gain-of-function mutations are responsible for mechanical hypersensitivity had never been proven.

Mutation dramatically sensitises nociceptors

To study the connection, Sánchez-Carranza created two strains of so called “gain-of-function” mice, each carrying a different version of a mutated PIEZO2 gene. He expected to find the touch receptors of these mice to be highly sensitive. In cell biology experiments his team has found that PIEZO2 mutations have a powerful effect on the activity of the ion channel. One mutation, for example, causes the channel to open with 10 times less force compared to normal non-mutated channels.

Using electrophysiological methods developed in the Lewin lab, Sánchez-Carranza and his colleagues measured electrical activity in sensory neurons isolated from the transgenic mice. They found that in addition to sensitising touch receptors as expected, the mutations made nociceptive receptors – neurons that detect painful mechanical stimuli – dramatically more sensitive to mechanical stimuli.

Moreover, the researchers found that the nociceptors were activated by mechanical stimuli that would normally be experienced as light touch.

“You pretty much need to crush the skin to activate nociceptors,” Sánchez-Carranza explains. But the nociceptors from the transgenic mice were triggered by levels of mechanical force that would normally be perceived as a touch. They were incredibly sensitive.”

That a single mutation in PIEZO2 was enough to change the physiology of the nociceptors from one type of neuron to another, was especially surprising, says Lewin. More significantly, when the stimulus was removed, the neurons kept firing. The study is the first time that anyone has linked gain-of-function mutations in the PIEZO2 gene to pain receptors.

PIEZO2 might be involved in pain syndromes like fibromyalgia

Clinical studies have shown that in patients with chronic pain syndromes such as fibromyalgia and small fibre neuropathies, C-fibre nociceptors, which are the sensory receptors that initiate pain, are hyperactive. When researchers have recorded the activity of nociceptors in such people, they found that the they were active in the absence of any mechanical stimulus. But the mechanism was not clear.

“We show that just by changing one amino acid in PIEZO2, we can actually mimic a lot of what happens in chronic pain in the C-fibres,” says Lewin. In humans, “PIEZO2 might be involved in many of these pathologies.” Nociceptive neurons are the largest population of sensory neurons that innervate the skin – humans have four times more pain receptors in the skin than touch receptors.

Up to 20% of the adult population suffers from chronic pain, according to a 2023 study by the U.S. National Institutes of Health, which is poorly treated with existing medications. The same NIH study found that two thirds of people who reported chronic pain in 2019 were still suffering one year later.

The findings suggest that a particular aspect of the PIEZO2 channels mechanism of opening could be targeted by new pain medications. Much effort on developing new analgesics has focused on voltage gated sodium channels with limited success, says Lewin. “By addressing the root cause of nociceptor sensitisation, new drugs could provide better relief for chronic pain sufferers.”

Source: Max Delbrück Center

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Dependence on Pain Medication is on the Rise

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Dependence on pain medication is on the rise due to lack of vigilance by medical professionals, according to a new study from the University of Surrey. In the paper published in the journal Pain and Therapy, patients dependent on pain medication describe feelings of ‘living in a haze’ and being ignored and misunderstood by the medical profession.

In the first study of its kind in the UK, Louise Norton and Dr Bridget Dibb from the University of Surrey investigated the experiences of patients dependent on medication for chronic pain. Pharmacological treatment for chronic pain usually involves potentially addictive substances such as non-steroidal anti-inflammatory drugs, gabapentinoids, and opioids. Increased prescription levels of such pain relief medications have been associated with heightened levels of overdose and misuse.

Dr Bridget Dibb, Senior Lecturer in Health Psychology at the University of Surrey, said: “An increasing number of people are experiencing chronic pain, which can interfere with their daily life and lead to depression and anxiety. Medication can help alleviate pain and return a sense of normalcy to a person’s life; however, there is a risk of dependence, which can potentially cause damage to vital organs, including the liver and kidneys.

“The first step to tackle this problem is to learn more about a person’s experience, how they perceive their dependence and how they interact with others, including the medical profession.”

To learn more, interviews were carried out with nine participants who had become dependent on pain medication. Participants spoke about how their dependence on pain medication resulted in them feeling not fully present and removed from their lives due to the side effects of the treatment. Many also expressed frustration about the lack of alternative treatment options available on the NHS to manage their pain, with medications being too readily prescribed.

The majority of participants also spoke about their negative interactions with medical professionals, with some attributing the cause of their dependence on them. Many believed a lack of continuity between doctors led to missed opportunities in spotting their dependence, enabling it to continue.

Louise Norton added: “Relationships with medical professionals substantially affect the experiences of those with painkiller dependence. Doctors can often be seen as authority figures due to their expertise and so patients may be apprehensive to question their treatment options. However, through providing patients with thorough information, doctors can enable more shared-decision making in which patients feel better supported and equipped to manage their chronic pain.”

Researchers noted participants felt stigmatised when speaking with others about their dependence due to a lack of understanding about their reliance to prescribed pain medications. Such interactions left participants feeling ashamed and critical of themselves.

Dr Dibb added: “Those with a dependence on prescription painkillers not only have to navigate their reliance on the medication but the shame and guilt associated with such a need. Combining this with feelings of being misunderstood and ignored by medical professionals, they have a lot of emotional needs to be managed alongside their physical pain. To prevent this from happening medical professionals need to be more vigilant when prescribing medication and ensure that their patients are fully aware of the risk of dependence before they begin treatment.”

Source: University of Surrey

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Chronic Back Pain may be Easier to Treat if it’s ‘in the Brain’

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One therapy for chronic back pain is to teach patients how to ‘reprocess’ it in the brain. Now, this therapy may become even more effective thanks a study published in JAMA Network Open. The study examined the critical connection between the brain and pain for treating chronic pain. Specifically, they looked at the importance of pain attributions, which are people’s beliefs about the underlying causes of their pain, to reduce chronic back pain severity. Understanding the source of the pain may help some to avoid surgery which may be ineffective or even worsen the pain.

“Millions of people are experiencing chronic pain and many haven’t found ways to help with the pain, making it clear that something is missing in the way we’re diagnosing and treating people,” said the study’s first author Yoni Ashar, PhD, assistant professor of internal medicine at the University of Colorado Anschutz Medical Campus.

Pain is often in the brain

Ashar and his team tested whether the reattribution of pain to mind or brain processes was associated with pain relief in pain reprocessing therapy (PRT), which teaches people to perceive pain signals sent to the brain as less threatening. Their goal was to better understand how people recovered from chronic back pain. The study revealed after PRT, patients reported reduced back pain intensity.

“Our study shows that discussing pain attributions with patients and helping them understand that pain is often ‘in the brain’ can help reduce it,” Ashar said.

To study the effects of pain attributions, they enrolled over 150 adults experiencing moderately severe chronic back pain in a randomised trial to receive PRT. They found that two-thirds of people treated with PRT reported being pain-free or nearly so after treatment, compared to only 20% of placebo controls.

“This study is critically important because patients’ pain attributions are often inaccurate. We found that very few people believed their brains had anything to do with their pain. This can be unhelpful and hurtful when it comes to planning for recovery since pain attributions guide major treatment decisions, such as whether to get surgery or psychological treatment,” said Ashar.

Before PRT treatment, only 10% of participants’ attributions of PRT treatment were mind- or brain-related. However, after PRT, this increased to 51%. The study revealed that the more participants shifted to viewing their pain as due to mind or brain processes, the greater the reduction in chronic back pain intensity they reported.

The role of discussing brain drivers of chronic pain 

“These results show that shifting perspectives about the brain’s role in chronic pain can allow patients to experience better results and outcomes,” Ashar adds.

Ashar says that one reason for this may be that when patients understand their pain as due to brain processes, they learn that there is nothing wrong with their body and that the pain is a ‘false alarm’ being generated by the brain that they don’t need to be afraid of.

The researchers hope this study will encourage providers to talk to their patients about the reasons behind their pain and discuss causes outside of biomedical ones.

“Often, discussions with patients focus on biomedical causes of pain. The role of the brain is rarely discussed,” said Ashar. “With this research, we want to provide patients as much relief as possible by exploring different treatments, including ones that address the brain drivers of chronic pain.”

Source: University of Colorado Anschutz Medical Campus

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The Impacts of Persistent Pain in Older Adults

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In a study of 5589 US adults aged 65 years and older, persistent pain was common and was linked to meaningful declines in physical function and well-being over 7 years. Reporting in the Journal of the American Geriatrics Society, investigators found that 38.7% of participants reported persistent pain, and 27.8% reported intermittent pain. (“Persistent pain” was defined as being bothered by pain in the last month in two consecutive annual interviews and “intermittent” pain was defined as bothersome pain in one interview only.)  

More than one-third of participants described pain in five or more sites. Over the subsequent 7 years, participants with persistent pain were more likely to experience declines in physical function (64% persistent pain, 59% intermittent pain, 57% no bothersome pain) and well-being (48% persistent pain, 45% intermittent pain, 44% no bothersome pain), but were not more likely to experience cognitive decline (25% persistent pain, 24% intermittent pain, 23% no bothersome pain).

“The findings from this study point to the importance of access to effective treatment for persistent pain in older adults and the need for additional research in chronic pain to optimise quality of life,” said lead author Christine Ritchie, MD, MSPH, of Massachusetts General Hospital.

Source: Wiley

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Scans of Brain Connectivity in Veterans Yield Objective Pain Measures

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MRI images of the brain
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A brain connectivity study of military veterans discovered three unique brain subtypes potentially indicating high, medium, and low susceptibility to pain and trauma symptoms. This could constitute an objective measurement of pain and trauma susceptibility, possibly leading to personalised treatments and new therapies based on neural connectivity patterns.  

Comorbidity Goes Unexplored

“Chronic pain is a major public health concern, especially among veterans,” said first author Prof Irina Strigo. “Moreover, chronic pain sufferers almost never present with a single disorder but often with multiple co-morbidities, such as trauma, posttraumatic stress, and depression.”

It is already understood that both pain and trauma can affect brain connections, but this had not been studied in the context of comorbid trauma and pain. Much pain and trauma research also relies on subjective measurements, such as questionnaires, rather than objective measurements like brain scans. This study, published in Frontiers in Pain Research, addresses these problems.

Theresearchers studied a group of 57 veterans with both chronic back pain and trauma, who had quite varied symptoms in terms of pain and trauma severity. Functional MRI scans of the veterans’ brains showed the strength of connections between brain regions involved in pain and trauma. The researchers then used a statistical technique to automatically group the veterans based on their brain connection signatures, regardless of their self-reported pain and trauma levels.

Based on the veterans’ brain activity, they were sorted into three groups. Strikingly, these divisions were comparable to the severity of the veterans’ symptoms, and they fell into a low, medium, or high symptom group.

The team hypothesised that the pattern of brain connections found in the low symptom group allowed veterans to avoid some of the emotional fallout from pain and trauma, and also included natural pain reduction capabilities. Conversely, the high symptom group demonstrated brain connection patterns that may have increased their chances of anxiety and catastrophising when experiencing pain.

Interestingly, based on self-reported pain and trauma symptoms, the medium symptom group was largely similar to the low symptom group. However, the medium symptom group showed differences in their brain connectivity signature, which suggested that they were better at focusing on other things when experiencing pain, reducing its impact.

Putting the findings into future practice

“Despite the fact that the majority of subjects within each subgroup had a co-morbid diagnosis of pain and trauma, their brain connections differed,” said Prof Strigo.

“In other words, despite demographic and diagnostic similarities, we found neurobiologically distinct groups with different mechanisms for managing pain and trauma. Neurobiological-based subgroups can provide insights into how these individuals will respond to brain stimulation and psychopharmacological treatments.”

Thus far, it’s not known whether these neural hallmarks represent a vulnerability to trauma and pain or a consequence of these conditions. The technique does however provide an objective and unbiased hallmark of pain and trauma susceptibility or resilience, not reliant on subjective measures such as the surveys. In fact, subjective measurements of pain in this study would not differentiate between the low and medium groups.

Techniques using objective measures like brain connectivity appear more sensitive and could provide a clearer overall picture of someone’s resilience or susceptibility to pain and trauma, thereby guiding personalised treatment and paving the way for new treatments.

Source: Frontiers

Categories : Ageing Pain ManagementTags :

Body Mass Index Impacts Pain in People with Hand Osteoarthritis

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In a study published in Arthritis & Rheumatology, people with hand osteoarthritis, higher body mass index was associated with greater pain severity in the hands, feet, knees, and hips.

Osteoarthritis is one of the most debilitating joint disorders worldwide, affecting up to 10% of men and 13% of women.  Osteoarthritis is characterised by a progressive onset of joint damage, commonly associated with pain. Joints commonly affected include the knee, hip and hand. Various stressors, risk factors and genetics may predispose an individual to developing osteoarthritis in a particular joint.

In a study of 281 patients, researchers noted that observed associations of body mass index with hand pain and total body joint pain seemed to involve certain inflammatory markers (leptin and high-sensitivity C-reactive protein, respectively).  

The researchers suggest that systemic effects of obesity, measured by leptin, could have a larger mediating role for pain in hands than in lower extremities. Low-grade inflammation, measured by hs-CRP, may contribute to generalised pain in overweight or obese individuals.

“Our results highlight the complexity of pain in hand osteoarthritis. Obesity is not only leading to pain through increased loading of joints in the lower extremities, but seems to have systemic effects leading to pain in the hands and overall body,” said lead author Marthe Gløersen, MD, of Diakonhjemmet Hospital, in Norway.

Source: Wiley

Categories : Injury & Trauma Pain ManagementTags :

Chronic Pain in Spinal Cord Injury Increases Mental Health Risk

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Having a spinal cord injury increases risk of developing mental health conditions such as depression and anxiety by nearly 80% compared to those without the traumatic injury, a new study shows. However, chronic pain may have an equally large, negative effect on mental health.

The study, published in Spinal Cord, compared private insurance claims from more than 9000 adults with a traumatic spinal cord injury with those of more than 1 million without. Researchers accounted for a range of psychological conditions, from anxiety and mood disorders to insomnia and dementia.

People living with a spinal cord injury had a diagnosis of a mental health condition more often than those without – 59.1% versus 30.9%. While depression and adverse mental health effects are not inevitable consequences of every traumatic spinal injury, previous studies have consistently echoed higher levels of psychological morbidity among this group than the general population without spinal cord injuries.

However, this study found that chronic centralised and neuropathic pain among adults living with a spinal cord injury were robustly associated with post-traumatic stress disorder, substance use disorders and other mental health conditions. In most cases, chronic pain was an even greater influence on these conditions than exposure to living with the injury itself.

The study authors said the findings should prompt physicians to identify mental health conditions when seeing patients with spinal cord injuries and refer them for treatment.

“Improved clinical efforts are needed to facilitate screening of, and early treatment for, both chronic pain and psychological health in this higher-risk population,” said lead author Dr Mark Peterson, associate professor of physical medicine and rehabilitation at Michigan Medicine.

However, researchers note a lack of insurance coverage and limited available services will likely cause the issue to remain largely unaddressed.

“Stakeholders need to work together to lobby for more federal research funding and special policy amendments to ensure adequate and long-term insurance coverage for both physical and mental health to meet the needs of folks living with spinal cord injuries,” Dr Peterson said.

Source: EurekAlert!

Categories : Mental HealthTags :

Depression Genes Result in More Physical Symptoms

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People who have a higher genetic risk of clinical depression are more likely to experience physical symptoms such as chronic pain, fatigue and migraine, researchers have found.

Depression is a serious disorder with lifetime risks of poor health, according to Dr Enda Byrne from UQ’s Institute for Molecular Bioscience.

“A large proportion of people with clinically-diagnosed depression present initially to doctors with physical symptoms that cause distress and can severely impact on people’s quality of life,” Dr Byrne said.

“Our research aimed to better understand the biological basis of depression and found that assessing a broad range of symptoms was important.

“Ultimately, our research aimed to better understand the genetic risks and generate more accurate risk scores for use in research and healthcare.”

Despite recent breakthroughs, Dr Byrne said it was difficult to find more genetic risk factors because of the range of patient ages, their symptoms, responses to treatment and additional mental and physical disorders.

“Previous genetic studies have included participants who report having seen a doctor for worries or tension – but who may not meet the ‘official’ criteria for a diagnosis of depression,” Dr Byrne said

Published in JAMA Psychiatry, the study analysed data from more than 15 000 volunteers who provided details of their mental health history, depression symptoms and a DNA sample using a saliva kit.

“We wanted to see how genetic risk factors based on clinical definitions of depression differed – from those based on a single question to those based on a doctor’s consultation about mental health problems,” Dr Byrne said.

The study found that participants with higher genetic risk for clinical depression are more likely to experience physical symptoms such as chronic pain, fatigue and migraine.

 “It is also linked to higher rates of somatic symptoms – that is, physical symptoms that cause distress and can severely impact on people’s quality of life,” Dr Byrne said.

“Our results highlight the need for larger studies investigating the broad range of symptoms experienced by people with depression.”

Source: University of Queensland