Jan H. Bolk

Cognitive behavioural therapy for medically unexplained physical symptoms: a randomised controlled trial.

Abstract Objective: To examine the additional effect of cognitive behavioural therapy for patients with medically unexplained physical symptoms in comparison with optimised medical care. Design: Randomised controlled trial with follow up assessments six and 12 months after the baseline evaluation. Setting: General medical outpatient clinic in a university hospital. Subjects: An intervention group of 39 patients and a control group of 40 patients. Interventions: The intervention group received between six and 16 sessions of cognitive behavioural therapy. Therapeutic techniques used included identification and modification of dysfunctional automatic thoughts and behavioural experiments aimed at breaking the vicious cycles of the symptoms and their consequences. The control group received optimised medical care. Main outcome measures: The degree of change, frequency and intensity of the presenting symptoms, psychological distress, functional impairment, hypochondriacal beliefs and attitudes, and (at 12 months of follow up) number of visits to the general practitioner. Results: At six months of follow up the intervention group reported a higher recovery rate (odds ratio 0.40; 95% confidence interval 0.16 to 1.00), a lower mean intensity of the physical symptoms (difference −1.2; −2.0 to −0.3), and less impairment of sleep (odds ratio 0.38; 0.15 to 0.94) than the controls. After adjustment for coincidental baseline differences the intervention and control groups also differed with regard to frequency of the symptoms (0.32; 0.13 to 0.77), limitations in social (0.35; 0.14 to 0.85) and leisure (0.36; 0.14 to 0.93) activities, and illness behaviour (difference −2.5; −4.6 to −0.5). At 12 months of follow up the differences between the groups were largely maintained. Conclusion: Cognitive behavioural therapy seems to be a feasible and effective treatment in general medical patients with unexplained physical symptoms.

A validation study of the Whitely Index, the Illness Attitude Scales, and the Somatosensory Amplification Scale in general medical and general practice patients

The aim of this study was to assess the reliability and validity of the Whitely Index (WI), the Illness Attitude Scales (IAS), and the Somatosensory Amplification Scale (SAS). The study population consisted of 130 general medical outpatients, 113 general practice patients, and 204 subjects from the general population. The factorial structure of the IAS appeared to consist of two subscales, namely Health Anxiety and Illness Behaviour. The internal consistency and stability of the three questionnaires were satisfactory, and their scores were highly intercorrelated. Scores on the WI and Health Anxiety subscale of the IAS declined significantly from general medical outpatients, through general practice patients to subjects from the general population. This might imply that medical care utilisation is related to hypochondriasis. A prospective study is needed to determine whether health anxiety contributes to the decision to seek medical care or the consultation of a general practitioner or consultant gives rise to worry about possible illness.

Psychiatric disorders in relation to medical illness among patients of a general medical out-patient clinic

In many patients clinical care in general medical settings is complicated by the presence of psychiatric disorders in addition to the presenting physical symptoms. In the present study the prevalence and type of psychiatric disorders was assessed in relation to the medical diagnostic findings in a general internal medicine out-patient clinic. The Present State Examination, a standardized psychiatric interview, was used to detect psychiatric disorders in 191 newly referred patients. Psychiatric disorders were found to be particularly prevalent among patients with medically ill-explained or unexplained symptoms. The prevalence of psychiatric disorders was 15% for patients with a medical explanation for their presenting symptom, 45% for patients with ill-explained and 38% for those with unexplained symptoms. Approximately 40% of the patients with psychiatric disorders met DSM-III-R criteria for somatization disorder or hypochondriasis, suggesting that these disorders contributed in particular to general medical out-patient referrals.

Unexplained physical symptoms: outcome, utilization of medical care and associated factors

The aim of the study was to investigate the recovery and frequency of physician contact in patients with unexplained physical symptoms and to identify factors associated with persistent disorder. Of 100 consecutive patients who presented with medically unexplained symptoms to a general medical out-patient clinic, 81 participated in a follow-up study. The mean follow-up time was 15.2 months (S.D. 4.0). At follow-up, many of the patients with unexplained physical symptoms reported that they had recovered (30%) or improved (46%) with regard to their presenting symptoms. Female sex and a high number of symptoms predicted a bad outcome in terms of recovery. Persistence of symptoms was not related to the duration of the symptoms, type of presenting complaint or the presence of psychiatric disorder. Forty per cent of patients with unexplained symptoms did not visit their general practitioner on their own initiative in the year following the initial visit to the clinic. Medical care utilization appeared to be associated with female sex, age, number and duration of symptoms, fatigue and psychiatric disorder, especially somatoform disorders. However, the association of a high frequency of physician contact with female sex and psychiatric disorder was not sustained after controlling for possible confounding factors.

The diagnostic and prognostic significance of the Whitely Index, the Illness Attitude Scales and the Somatosensory Amplification Scale

The aim of this study was to assess the ability of the Whitely Index, Illness Attitude Scales and Somatosensory Amplification Scale to differentiate in patients with medically unexplained physical symptoms between hypochondriacal and non-hypochondriacal patients and to examine whether the scores on these questionnaires are predictive of long-term outcome in terms of recovery of presenting symptoms and number of visits to the general practitioner. The study population consisted of 183 consecutive patients, who presented with medically unexplained physical symptoms to a general medical out-patient clinic. The Health Anxiety subscale of the Illness Attitude Scales and the Whitely Index were best in discriminating between hypochondriacal and non-hypochondriacal patients. The sensitivity and specificity of the Health Anxiety subscale of the Illness Attitude Scales were 79% and 84%, and of the Whitely Index 87% and 72%. The Whitely Index was negatively associated with recovery rate at 1 year follow-up. The Illness Behaviour subscale of the Illness Attitude Scales appeared to be predictive of the number of visits to the general practitioner. These findings might have clinical implications in helping to distinguish in patients with medically unexplained symptoms those for whom there is a high chance of persistence of the symptoms and/or of high medical care utilization.

Is alexithymia a risk factor for unexplained physical symptoms in general medical outpatients

Objective Alexithymia is presumed to play an important predisposing role in the pathogenesis of medically unexplained physical symptoms. However, no research on alexithymia has been done among general medical outpatients who present with medically unexplained physical symptoms as their main problem and in which anxiety and depression have been considered as possible confounding factors. This study investigated whether patients with medically unexplained physical symptoms are more alexithymic than those with explained symptoms and whether, in patients with unexplained symptoms, alexithymia is associated with subjective health experience and use of medical services. Methods We conducted a cross-sectional study among patients attending an internal medicine outpatient clinic. All patients were given a standardized interview and completed a number of questionnaires. Results After complete physical examinations, 169 of 321 patients had unexplained physical symptoms according to two independent raters. Patients with medically unexplained symptoms more often had a mental disorder, but overall they were not more alexithymic. In patients with unexplained physical symptoms, alexithymia was not associated with subjective health experience or use of medical services. However, patients with both unexplained symptoms and a mental disorder who also denied any possible connection between emotional problems and their physical symptoms did have more alexithymic traits. Conclusions In the majority of patients with medically unexplained physical symptoms, alexithymia does not play a role of clinical significance. Patients with unexplained physical symptoms are heterogeneous with respect to psychiatric syndrome pathology and probably also with respect to personality pathology.

Alexithymia does not predict the persistence of medically unexplained physical symptoms

Background Alexithymia is thought to be associated with the development of medically unexplained physical symptoms (UPS). So far little research has been published on alexithymia as a risk factor for the persistence of UPS. Objective To determine the clinical outcome in UPS patients and to study the relative importance of alexithymia in predicting that outcome. Methods A follow-up study was conducted among general medical outpatients with UPS. Patients underwent extensive examinations at baseline and were reassessed after a mean 61-week interval. Outcome of the UPS and general health perception at follow-up were used as major outcome variables. Results Outcome of the UPS and general health perception at follow-up were not strongly associated with each other. More than half (63%) of the patients reported improvement of their initial symptoms, but only 38% of the patients considered themselves at follow-up to be in good health. UPS outcome was predominantly predicted by the duration of the UPS and the number of additional physical symptoms at baseline. General health perception at follow-up was predominantly predicted by the general health perception at baseline and the number of additional physical symptoms and pain experience at baseline. The explained variance of the general health perception was three times as high as the explained variance for the UPS outcome. Alexithymia was not associated with any of the two outcome variables. Conclusions Outcome of the UPS and general health perception at follow-up are not strongly associated and are predicted by different variables. Alexithymia, however, is not an important predictor for the outcome in the majority of UPS patients.

The Reassurance Questionnaire (RQ): psychometric properties of a self-report questionnaire to assess reassurability

BACKGROUND The aim of this study was to develop a questionnaire that assessed the extent to which patients usually feel reassured by their attending physician. METHODS The study population consisted of 204 subjects from the general population, 113 general practice patients, 130 general medical out-patients and 183 general medical patients with unexplained physical symptoms participating in an intervention study on the effect of cognitive behavioural therapy. RESULTS Factor analysis yielded a one-factor solution. The internal consistency was moderate to high and the test-retest reliability was high. The convergent validity of the Reassurance Questionnaire (RQ) was satisfactory to good, but the scores on the RQ did not appear to differentiate between the general population, general practice patients and general medical out-patients. In medical out-patients with unexplained physical symptoms, the RQ discriminated well between hypochondriacal and non-hypochondriacal patients. Scores on the RQ tended to be associated with a bad outcome in terms of recovery of presenting symptoms at 1 year follow-up. There was no association between scores on the RQ and frequency of physician contact. In patients with unexplained physical symptoms treated with cognitive behavioural therapy, scores on the RQ decreased over a period of 6 months and 1 year. CONCLUSIONS The RQ was demonstrated to have psychometrically sound properties and appeared to be a useful instrument to assess reassurability in medical patients.

The acceptability of psychological treatment in patients with medically unexplained physical symptoms

Patients with unexplained physical symptoms are considered to benefit from psychological treatment, but are believed to be reluctant to accept a referral to a psychiatrist or psychologist. As a part of a treatment study, we had the opportunity to examine to what extent somatising patients are willing to accept psychological treatment and how patients who are willing to accept it differ from those who are not. The study was introduced to the patient by the attending physician, and the treatment took place in the general medical outpatient clinic itself. Of 229 patients who had presented with unexplained physical symptoms to a general hospital medical outpatient clinic, 172 (75%) were interviewed at about three months after their initial visit to the clinic. Fourty-five (26%) patients appeared to have either improved or recovered from their presenting symptoms, and 26 (15%) were already receiving psychiatric or psychological treatment. Of 98 patients eligible for treatment, 79 (81%) were willing to participate. Compared with the patients who agreed to take part, the nonparticipants reported lower levels of physical symptoms and less functional impairment. In conclusion, most of the patients who might have benefitted from additional psychological help were willing to accept it. Somatising patients who rejected psychological treatment were those with the least serious problems.

Causes of hyponatremia in the Departments of Internal Medicine and Neurosurgery.

BACKGROUND: Hyponatremia is a common electrolyte disorder in hospitalised patients. The distribution of the various causes of hyponatremia has been studied in hospitalised patients in general, but little is known about the distribution in specific departments. We performed a prevalence study on the aetiology of hyponatremia in two departments in our hospital, namely, the Department of Internal Medicine and the Department of Neurosurgery. METHODS: Consecutive adult patients with hyponatremia (serum sodium concentration</=130 mmol/l) who had been admitted to the Departments of Internal Medicine and Neurosurgery were included in the study. The cause of hyponatremia was determined on the basis of information obtained from medical records, estimation of extracellular fluid volume status, water balance and biochemical parameters in blood serum and urine. RESULTS: Out of 41 hyponatremic patients, 12 had hyponatremia due to normovolemic disorders, 10 due to hypervolemic disorders, 11 due to hypovolemic disorders with extrarenal sodium loss and eight due to hypovolemic disorders with renal sodium loss. The most frequent causes of hyponatremia were extrarenal sodium loss due to vomiting or diarrhoea, hepatic cirrhosis, drug-induced hyponatremia and the syndrome of inappropriate ADH secretion. CONCLUSIONS: In the Departments of Internal Medicine and Neurosurgery, certain causes of hyponatremia are more prevalent than others. The use of clinical data, in combination with a few simple laboratory tests, can lead to a correct diagnosis of the principal cause of hyponatremia.