Diagnostic and treatment barriers to persistent somatic symptoms in primary care - representative survey with physicians

Which patients are at risk of developing symptom diagnoses that persist for more than a year in primary care? Development and external validation of a prediction model

OBJECTIVES

To train, test and externally validate a prediction model that supports General Practitioners (GPs) in early identification of patients at risk of developing symptom diagnoses that persist for more than a year.

METHODS

We retrospectively collected and selected all patients having episodes of symptom diagnoses during the period 2008 and 2021 from the Family Medicine Network (FaMe-Net) database. From this group, we identified symptom diagnoses that last for less than a year and symptom diagnoses that persist for more than a year. Multivariable logistic regression analysis using a backward selection was used to assess which factors were most predictive for developing symptom diagnoses that persist for more than a year. Performance of the model was assessed using calibration and discrimination (AUC) measures. External validation was tested using data between 2018 and 2022 from AHON-registry, a primary care electronic health records data registry including 73 general practices from the north and east regions of the Netherlands and about 460,795 patients.

RESULTS

From the included 47,870 patients with a symptom diagnosis in the FaMe-Net registry, 12,481 (26.1%) had a symptom diagnosis that persisted for more than a year. Older age (≥ 75 years: OR = 1.30, 95% CI [1.19, 1.42]), having more previous symptom diagnoses (≥ 3: 1.11, [1.05, 1.17]) and more contacts with the GP over the last 2 years (≥ 10 contacts: 5.32, [4.80, 5.89]) were predictive of symptom diagnoses that persist for more than a year with a marginally acceptable discrimination (AUC 0.70, 95% CI [0.69-0.70]). The external validation showed poor performance with an AUC of 0.64 ([0.63-0.64]).

CONCLUSION

A clinical prediction model based on age, number of previous symptom diagnoses and contacts might help the GP to early identify patients developing symptom diagnoses that persist for more than a year. However, the performance of the original model is limited. Hence, the model is not yet ready for a large-scale implementation.

An integrated mental health video consultations model for patients with somatic symptom disorder in primary care: The randomized VISION pilot trial

OBJECTIVE

Symptoms of somatic symptom disorder (SSD) are one of the most common reasons for consultations in primary care. However, specialized psychological services are mostly unavailable. This pilot trial aimed to determine the feasibility, acceptability, and safety of the integrated mental health video consultations VISION model for patients with SSD in primary care.

METHODS

We conducted a parallel group, randomized controlled pilot trial involving fifty-one patients with SSD from ten primary care practices in Germany, who we randomized to the VISION model or enhanced treatment-as-usual (eTAU). The VISION model comprised five video consultations which featured diagnostic clarification, psychoeducation (acknowledging and legitimizing of symptoms), and brief psychological therapy. eTAU included training primary care practice teams on the DSM-5 concept of SSD and on current guideline recommendations for its treatment in primary care. We assessed feasibility as the primary outcome at 6-months, measuring efficiency of recruitment, intervention acceptability, and safety.

RESULTS

Recruitment was efficient reflected in an overall recruitment yield (number randomized per number screened) of 55% (51/92) and a consent rate (number randomized per number eligible) of 94% (51/54). Acceptability of the intervention was high with 98% (123/125) of the video consultations conducted as planned. No serious adverse events were reported in either group.

CONCLUSION

An integrated mental health video consultations VISION model for patients with SSD presenting to primary care is feasible, acceptable, and safe. Potential clinical effectiveness of the model should be evaluated in confirmatory trial implementing the multifaceted approach tailored to the individual patient with SSD directly into primary care practice.

TRIAL REGISTRATION

The trial protocol was registered at German Clinical Trials Register (number: DRKS00026075, https://www.drks.de).

Persistent physical symptoms: definition, genesis, and management

Persistent physical symptoms (synonymous with persistent somatic symptoms) is an umbrella term for distressing somatic complaints that last several months or more, regardless of their cause. These symptoms are associated with substantial disability and represent a major burden for patients, health-care professionals, and society. Persistent physical symptoms can follow infections, injuries, medical diseases, stressful life events, or arise de novo. As symptoms persist, their link to clearly identifiable pathophysiology often weakens, making diagnosis and treatment challenging. Multiple biological and psychosocial risk factors and mechanisms contribute to the persistence of somatic symptoms, including persistent inflammation; epigenetic profiles; immune, metabolic and microbiome dysregulation; early adverse life experiences; depression; illness-related anxiety; dysfunctional symptom expectations; symptom focusing; symptom learning; and avoidance behaviours, with many factors being common across symptoms and diagnoses. Basic care consists of addressing underlying pathophysiology and using person-centred communication techniques with validation, appropriate reassurance, and biopsychosocial explanation. If basic care is insufficient, targeted psychological and pharmacological interventions can be beneficial. A better understanding of the multifactorial persistence of somatic symptoms should lead to more specific, personalised, and mechanism-based treatment, and a reduction in the stigma patients commonly face.

Persistent somatic symptoms are key to individual illness perception at one year after COVID-19 in a cross-sectional analysis of a prospective cohort study

OBJECTIVE

Subjective illness perception (IP) can differ from physician's clinical assessment results. Herein, we explored patient's IP during coronavirus disease 2019 (COVID-19) recovery.

METHODS

Participants of the prospective observation CovILD study (ClinicalTrials.gov: NCT04416100) with persistent somatic symptoms or cardiopulmonary findings one year after COVID-19 were analyzed (n = 74). Explanatory variables included demographic and comorbidity, COVID-19 course and one-year follow-up data of persistent somatic symptoms, physical performance, lung function testing, chest computed tomography and trans-thoracic echocardiography. Factors affecting IP (Brief Illness Perception Questionnaire) one year after COVID-19 were identified by regularized modeling and unsupervised clustering.

RESULTS

In modeling, 33% of overall IP variance (R2) was attributed to fatigue intensity, reduced physical performance and persistent somatic symptom count. Overall IP was largely independent of lung and heart findings revealed by imaging and function testing. In clustering, persistent somatic symptom count (Kruskal-Wallis test: η2 = 0.31, p < .001), fatigue (η2 = 0.34, p < .001), diminished physical performance (χ2 test, Cramer V effect size statistic: V = 0.51, p < .001), dyspnea (V = 0.37, p = .006), hair loss (V = 0.57, p < .001) and sleep problems (V = 0.36, p = .008) were strongly associated with the concern, emotional representation, complaints, disease timeline and consequences IP dimensions.

CONCLUSION

Persistent somatic symptoms rather than abnormalities in cardiopulmonary testing influence IP one year after COVID-19. Modifying IP represents a promising innovative approach to treatment of post-COVID-19 condition. Besides COVID-19 severity, individual IP should guide rehabilitation and psychological therapy decisions.

Early identification of persistent somatic symptoms in primary care: data-driven and theory-driven predictive modelling based on electronic medical records of Dutch general practices

OBJECTIVE

The present study aimed to early identify patients with persistent somatic symptoms (PSS) in primary care by exploring routine care data-based approaches.

DESIGN/SETTING

A cohort study based on routine primary care data from 76 general practices in the Netherlands was executed for predictive modelling.

PARTICIPANTS

Inclusion of 94 440 adult patients was based on: at least 7-year general practice enrolment, having more than one symptom/disease registration and >10 consultations.

METHODS

Cases were selected based on the first PSS registration in 2017-2018. Candidate predictors were selected 2-5 years prior to PSS and categorised into data-driven approaches: symptoms/diseases, medications, referrals, sequential patterns and changing lab results; and theory-driven approaches: constructed factors based on literature and terminology in free text. Of these, 12 candidate predictor categories were formed and used to develop prediction models by cross-validated least absolute shrinkage and selection operator regression on 80% of the dataset. Derived models were internally validated on the remaining 20% of the dataset.

RESULTS

All models had comparable predictive values (area under the receiver operating characteristic curves=0.70 to 0.72). Predictors are related to genital complaints, specific symptoms (eg, digestive, fatigue and mood), healthcare utilisation, and number of complaints. Most fruitful predictor categories are literature-based and medications. Predictors often had overlapping constructs, such as digestive symptoms (symptom/disease codes) and drugs for anti-constipation (medication codes), indicating that registration is inconsistent between general practitioners (GPs).

CONCLUSIONS

The findings indicate low to moderate diagnostic accuracy for early identification of PSS based on routine primary care data. Nonetheless, simple clinical decision rules based on structured symptom/disease or medication codes could possibly be an efficient way to support GPs in identifying patients at risk of PSS. A full data-based prediction currently appears to be hampered by inconsistent and missing registrations. Future research on predictive modelling of PSS using routine care data should focus on data enrichment or free-text mining to overcome inconsistent registrations and improve predictive accuracy.

Persistent somatic symptom related stigmatisation by healthcare professionals: A systematic review of questionnaire measurement instruments

OBJECTIVE

Patients with persistent somatic symptoms (PSS) experience stigmatising attitudes and behaviours by healthcare professionals. While previous research has focussed on individual manifestations of PSS related stigma, less is known about sound ways to measure stigmatisation by healthcare professionals towards patients with PSS. This review aims to assess the quality of questionnaire measurement instruments and make recommendations about their use.

METHODS

A systematic review using six databases (PubMed, Embase, CINAHL, PsycINFO, Open Grey and EThOS). The search strategy combined three search strings related to healthcare professionals, PSS and stigma. Additional publications were identified by searching bibliographies. Three authors independently extracted the data. Data analysis and synthesis followed COSMIN methodology for reviews of outcome measurement instruments.

RESULTS

We identified 90 publications that met the inclusion criteria using 62 questionnaire measurement instruments. Stereotypes were explored in 92% of instruments, prejudices in 52% of instruments, and discrimination in 19% of instruments. The development process of the instruments was not rated higher than doubtful. Construct validity, structural validity, internal consistency and reliability were the most commonly investigated measurement properties. Evidence around content validity was inconsistent or indeterminate.

CONCLUSION

No instrument provided acceptable evidence on all measurement properties. Many instruments were developed for use within a single publication, with little evidence of their development or establishment of content validity. This is problematic because stigma instruments should reflect the challenges that healthcare professionals face when working with patients with PSS. They should also reflect the experiences that patients with PSS have widely reported during clinical encounters.

Estimated frequency of somatic symptom disorder in general practice: cross-sectional survey with general practitioners

BACKGROUND

Somatic symptom disorder (SSD) is the successor diagnosis of somatoform disorder in the 5th Edition of the Diagnostic and Statistical Manual of Mental Disorders (DSM-5). Relevance and frequency of SSD and its clinical symptoms in general practice are still unknown. We estimate frequencies of patients fulfilling the diagnostic criteria of SSD in general practice.

METHODS

Mailed and online survey with general practitioners (GP) in Germany using a cross-sectional representative sample from registries of statutory health insurance physicians. GPs estimated percentages of their patients who show the clinical symptoms of SSD according to DSM-5; that is, one or more burdensome somatic symptoms (A criterion), excessive symptom- or illness-related concern, anxiety, or behaviour (B criterion), and persistence of the symptoms over at least 6 months (C criterion). Statistical analysis used means and confidence intervals of estimated patient proportions showing SSD symptoms. Frequency of full-blown SSD was based on the products of these proportions calculated for each GP.

RESULTS

Responses from 1728 GPs were obtained. GPs saw the clinical symptoms of SSD fulfilled (A and B criteria) in 21.5% (95% CI: 20.6 to 22.3) of their patients. They further estimated that in 24.3% (95% CI: 23.3 to 25.2) of patients, symptoms would persist, yielding a total of 7.7% (95% CI: 7.1 to 8.4) of patients to have a full-blown SSD.

CONCLUSIONS

We estimate a frequency of 7.7% of patients in general practice to fulfil the diagnostic criteria of SSD. This number may figure as a reference for the yet to be uncovered prevalence of SSD and it indicates a high clinical relevance of the clinical symptoms of SSD in general practice.

REGISTRATION

German Clinical Trials Register (Deutschen Register Klinischer Studien, DRKS).

DRKS-ID

DRKS00012942. The date the study was registered: October 2nd 2017. The date the first participant was enrolled: February 9th 2018.

Systematic review on somatization in a transcultural context among teenagers and young adults: Focus on the nosography blur

Aims

Somatic complaints are a frequent cause for consultation in primary care. In a transcultural context, somatic complaints are typically associated with psychological distress. A recent review about somatic symptom disorders in adolescence showed some nosographic heterogeneity and outlined various etiological hypotheses (traumatic, environmental, or neurologic), separate from the cross-cultural considerations. Migrants' children encounter specific problems involving cultural mixing-issues of filiation (familial transmission) and affiliation (belonging to a group). This paper aims to provide a systematic review of somatization in transcultural contexts among teenagers and young adults, aged 13 to 24, over the past decade.

Methods

This review adheres to the quality criteria set forth by the PRISMA guidelines (Preferred Reporting Items for Systematic Reviews and Meta-Analyses). Two authors queried three English databases (Medline, PsycInfo, WebOfScience) about somatization in transcultural contexts (migrant or non-Western population) among teenagers (13-18), young adults (19-24), or both. The methodological process comprised articles selection, data extraction, and then the analysis of emerging themes. Setting selection criteria to limit the transcultural field was difficult.

Results

The study analyzed 68 articles. We present a descriptive analysis of the results, centered on three main themes. First, the literature highlights a nosographic muddle reflected in the combination of anxious and depressive symptoms together with the highly variable symptomatology. Second, discrimination issues were prevalent among the migrant population. Lastly, the literature review points out possibilities for improving a care pathway and reducing the diagnostic delay induced by migrants' hesitancy about Western care and the recurrent use of inappropriate diagnostic criteria.

Conclusion

This review discusses the links between the nosographic muddle described here and the diagnostic delays these patients experience and raises concerns about rigid diagnostic compartmentalization. The work of the psychiatrist Frantz Fanon is here useful to understand externalized symptoms resulting from physical and psychological confinement. Discrimination issues raise questions about the cultural counter-transference health professionals experience in dealing with young migrants. Defining healthcare professionals' representations about somatic complaints in a transcultural context might be a fruitful path to explore in future research.

Protocol PROSPERO registration number

CRD42021294132. Available from: https://www.crd.york.ac.uk/prospero/display_record.php?ID=CRD42021294132.

Functional somatic symptoms in youths in general practice: A cross-sectional study on prevalence, clinical management and perceived burden

OBJECTIVE

Functional somatic symptoms (FSS) may progress into a functional disorder if poorly managed, which may have serious implications. This cross-sectional study describes the management of youths compared to adults in general practice and estimates the prevalence of FSS in youths in this setting by comparing consultation-related aspects between youths with FSS and 1) youths with a specific diagnosis and 2) adults with FSS.

METHODS

We used data from a Danish survey (2008-2009), including 3295 face-to-face consultations between GPs and patients aged 15-64 years. Patients were divided into youths (15-24 years) and adults (25-64 years) and then into subgroups according to the GPs' classifications: 1) specific diagnosis, 2) resolving symptom and 3) FSS. Logistic regression analysis was used for all comparisons, and estimates were adjusted for gender, concomitant chronic disorder and GP cluster.

RESULTS

The GPs more frequently ensured continuity of care in adults (AOR:0.75, 95%CI:0.61-0.92, p < 0.01) and perceived youths as less time consuming (AOR:0.58, 95%CI: 0.43-0.77, p < 0.01) and less burdensome (AOR:0.60; 95%CI: 0.45-0.81, p < 0.01) compared to adults. FSS prevalence was 4.4% in youths and 9.0% in adults. However, GPs perceived youths with FSS as more burdensome (AOR:7.77, 95%CI:2.93-20.04, p < 0.01) and more time consuming (AOR:3.98, 95%CI:1.42-11.12, p < 0.01) than youths with a specific diagnosis. No significant differences were found between youths and adults with FSS, respectively, in regards to perceived burden and consultation time.

CONCLUSION

The results indicate age-related variations in the prevalence and clinical management of FSS in general practice. The GPs perceived both youths and adults with FSS time consuming, which underlines a need for supportive management strategies.

Barriers and facilitators to implementing interventions for medically unexplained symptoms in primary and secondary care: A systematic review

OBJECTIVE

To integrate existing literature on barriers and facilitators to implementing interventions for Medically Unexplained Symptoms (MUS) in primary and secondary care.

METHOD

Systematic review following PRISMA guidelines. A search of PsychINFO/Pubmed/Web of Science was performed to select studies focusing on MUS-interventions and implementation. All included papers were checked for quality and bias. A narrative synthesis approach was used to describe the included papers by implementation level, ranging from the specific intervention to the broader economic/political context.

RESULTS

20 (quantitative/qualitative/mixed design) papers were included, but the quantitative studies especially, lacked methodological quality, with possible publication bias as a result. Results showed that the intervention needs to be acceptable and in line with daily practice routines. The professional's attitude and skills are important for implementation success, as well as for overcoming problems in the professional-patient interaction. If patients stick to finding a somatic cause, this hampers implementation. A lack of time is a frequently mentioned barrier at the organizational level. Barriers/facilitators at the social context level and at the economic/political level were barely reported on in the included papers.

CONCLUSION

Results were integrated into an existing implementation model, as an example of how MUS-interventions can be successfully implemented in practice.

Somatic Symptoms and Sleep Disorders: A Literature Review of Their Relationship, Comorbidities and Treatment

This study aimed to investigate the relationship between somatic symptom disorder (SSD) and sleep disorders, following three research questions: (1) How are these disorders correlated? (2) What are the comorbidities reported in these patients? and (3) What are the most effective pharmacological and non-pharmacological treatments for both conditions? PubMed, Scopus, OVID, Medline, and ProQuest databases were searched for relevant articles published between 1957–2020. Search terms included “somatic symptoms disorder”, “sleep disorders”, “insomnia”, “somatoform”, “somatization”, “therapeutic”, “psychotherapy”, and alternative, formerly used terms for SSD. Forty papers were finally included in the study. Prevalence of insomnia in SSD patients ranged between 20.4–48%, with this being strongly correlated to somatic symptoms and psychosocial disability. The most relevant comorbidities were generalized anxiety disorder, depression, fatigue, negative mood, substance use, orthorexia, alexithymia, anorexia, weight loss, poor eating habits, and acute stress disorder. Patients receiving antidepressant therapy reported significant improvements in insomnia and somatic symptoms. In terms of non-pharmacological interventions, cognitive-behavioral therapy (CBT) showed improvements in sleep outcomes, while the Specialized Treatment for Severe Bodily Distress Syndromes (STreSS) may represent an additional promising option. Future research could include other medical and psychosocial variables to complete the picture of the relationship between sleep disorders and somatic symptoms.