Short-term outcome of major depression: I. Comorbidity and severity at presentation as predictors of persistent disorder

OBJECTIVE

To determine whether there is a pattern of clinical characteristics at presentation that specifically predicts persistent major depression at 36 weeks follow-up.

METHOD

Sixty-eight consecutive cases with a first episode DSM-III-R diagnosis of major depression were interviewed with the Schedule for Affective Disorders and Schizophrenia for School-Age Children-Present Episode version and completed the mood and feelings self-report depression questionnaire (MFQ) at presentation and again at 36 weeks.

RESULTS

At presentation, 63 (93%) had one or more comorbid psychiatric disorders (median = 3). At 36 weeks, 17 (25%) cases were recovered; 17 (25%) continued to meet criteria for one or more psychiatric disorder but not major depression; 34 (50%) still met criteria for DSM-III-R major depression, of whom 25 (73%) had been persistently depressed and 9 (27%) had recovered and subsequently relapsed. Major depression at follow-up was specifically predicted by the additive effect of three features at presentation, comorbid obsessive-compulsive disorder, higher MFQ score, and being older. Comorbid oppositional defiant disorder at presentation was a significant predictor of persistent psychiatric disorder. Individuals with persistent depression (n = 25) were more likely to have a longer duration of illness before presentation.

CONCLUSION

Systematic assessment of comorbid psychiatric conditions at initial interview, together with the use, in older subjects, of a self-report questionnaire to determine subjective severity, will provide valid clinical information concerning the potential short-term outcome of major depression.

Cortisol, dehydroepiandrosterone (DHEA), and DHEA sulfate in the cerebrospinal fluid of man: relation to blood levels and the effects of age

The relation between blood and cerebrospinal fluid (CSF) concentrations of cortisol, dehydroepiandrosterone (DHEA), and its sulfate (DHEAS) was measured in 62 subjects aged 3-85 yr old, fitted with ventriculo-peritoneal or lumbar-peritoneal shunts for a variety of diagnoses. There were 36 males and 36 females. Forty-eight subjects were not taking exogenous corticosteroids; the other 14 were receiving either systemic or local steroids. A single sample of blood and CSF was taken from each subject within 10 min for measurement of cortisol, DHEA, and DHEAS. The proportional levels of cortisol (5.8%) and DHEA (5.4%) in the CSF compared with those in the blood were similar in subjects not taking steroids. However, CSF DHEAS levels were only 0.15% of those in the blood. Because DHEAS blood levels were so much greater than DHEA, DHEAS in the CSF was still higher than DHEA despite the reduced penetration of the sulfated steroid. The blood/CSF ratios were similar in subjects taking steroids. There were significant correlations in steroid-free subjects between blood and CSF levels for DHEA (r = 0.65) and DHEAS (r = 0.88) but not for cortisol (r = 0.26). Steroid treatment significantly lowered blood cortisol, DHEA and DHEAS, and CSF DHEA, but not CSF cortisol or DHEAS compared with an age- and sex-matched sample of steroid-free subjects. In steroid-free adults (18 yr and over; n = 37), blood cortisol showed no age-related change. However, CSF cortisol was markedly raised in a proportion of steroid-free subjects over the age of 60 yr. Levels of corticoid-binding globulin in plasma did not alter with age. As expected, there were significant age-related decrements in both blood DHEA and DHEAS. CSF DHEA (r = 0.42) and CSF DHEAS (r = 0.39) were significantly negatively correlated with age. In steroid-free juveniles (n = 11) there were no age-related changes in either blood or CSF cortisol, but significant increases with age in DHEA and DHEAS in both blood and CSF. Calculation of the cortisol/DHEA and cortisol/ DHEAS molar ratios in the CSF showed both to be raised in the very young (3-8 yr) and the elderly (60 yr and over) by a factor of 4-5 compared with young adults aged 18-39. There were no sex differences in any of the parameters measured. These findings show that the relation between levels in the blood and CSF differ for each of these three neuroactive steroids. The brain is exposed to relatively high levels of DHEA and DHEAS during later childhood and early adulthood but to relatively or absolutely high levels of cortisol during infancy and older age. In view of the known antiglucocorticoid action of DHEA and DHEAS, and the direct action of these steroids on membrane-bound transmitter events (such as gamma-aminobutyric acidA receptors), these changes may have important implications for age-related alterations in brain function.

Temperament and psychopathology amongst siblings of probands with depressive and anxiety disorders

Thirteen (42%) of 31 siblings of 29 probands with depression (n = 21) or anxiety disorders (n = 8) attending a clinic met DSM-IIIR criteria for psychiatric disorder, a rate nearly three times greater than reported from community studies. The diagnoses were heterogeneous. Compared with probands, sibling cases had half the level of comorbidity and significantly lower levels of psychosocial impairment. Comparisons of temperamental characteristics showed that higher levels of emotionality, but no other aspect of temperament, was associated with an increased likelihood of a sibling being a case. Higher emotionally in all cases (sibs and probands) was associated with greater comorbidity in general and the diagnoses of dysthymia and separation anxiety in particular.

Adrenal secretion and major depression in 8- to 16-year-olds, II. Influence of co-morbidity at presentation

The association between high evening cortisol and low morning DHEA and the pattern of co-morbid diagnoses in 82 cases of major depressive disorder in 8- to 16-year-olds has been analysed. There was a significant association between the presence of high evening cortisol and co-morbid dysthymia. This was independent of age or sex. No positive association was found between the presence of low morning DHEA and any co-morbid diagnosis. However, co-morbid panic or phobic disorder was significantly associated with the absence of this endocrine abnormality. These findings suggest that specific endocrine disturbances may be associated with different patterns of co-morbidity during an episode of major depression in this age group.

Adrenal secretion during major depression in 8- to 16-year-olds, I. Altered diurnal rhythms in salivary cortisol and dehydroepiandrosterone (DHEA) at presentation

The association between basal cortisol, dehydroepiandrosterone (DHEA), its sulphate (DHEAS) and major depression was investigated in 8- to 16-year-olds. Eighty-two subjects with major depression, 25 non-depressed psychiatric cases and 40 community controls were systematically assessed for current mental state and hormone levels at 08.00, 12.00 and 20.00 h, assayed from salivary samples collected over a 48 h period. The average mean of the two time points was compared between the three groups. Evening cortisol hypersecretion and morning DHEA hyposecretion were significantly, and independently, associated with major depression. High evening cortisol (> 0.594 ng/mL) and low morning DHEA (< 0.200 ng/mL) identified subgroups of depressives with different types of adrenal hormone dysregulation. The association between high evening cortisol or low morning DHEA and MDD was not affected by either age or gender.

Recent undesirable life events: their influence on subsequent psychopathology

Life events appear to exert a range of effects on subsequent behaviour through their impact on affective-cognitive processes. Their effects on those physiological processes pertinent to psychopathology have yet to be investigated. Single events do not exert much risk for subsequent disorder. It is the pattern of adverse life experiences, of which recent life events is frequently a component, that determines the degree of risk and the mechanisms and processes that may lead to subsequent psychopathology. Recall of events that occurred in the recent past may be influenced independently by the age of the individual and a previous episode of psychiatric disorder. Longitudinal studies determining the impact of life events on subsequent behaviour will need to take these features into account. There remains no specificity between particular types of recent undesirable life events and anxious or depressive disorders. Future longitudinal research should employ modern methods of life event data collection and measurement. The goal of future longitudinal research should be to determine the relative contribution of undesirable and desirable recent life events in the presence and absence of other putative casual factors from different domains. This should necessarily include social (e.g. long-term difficulties), psychological (e.g, temperament (18) or self esteem) and physiological (e.g. hypercortisolaemia in adolescent major depression (14, 11) elements. It is only through this combination of longitudinal design, together with sensitive and concurrent multiple repeat measurements that a greater understanding of the mechanisms and processes that determine psychopathology over the course of development will occur.

Temperament and major depression in 11 to 16 year olds

Temperament (EAS teacher and parent questionnaire) and mental state (modified DISC-C interview with adolescent) was systematically assessed in 193 11 to 16 year olds (112 girls, 81 boys) screened for major depression in the community. Sex differences in the structure of temperament were noted from both parent and teacher reports. High (negative) emotionality alone was associated with major depression, particularly (but not exclusively) in girls.

Depression in 11-16-year-old girls: the role of past parental psychopathology and exposure to recent life events

Interviews with parents of a non-referred sample of 11-16-year-old girls (n = 82) revealed that a significantly greater proportion of mothers with a lifetime history of any psychiatric disorder also reported one or more recent undesirable life events focused on the adolescent compared with mothers with no such history. Lifetime episodes of maternal depression and recent undesirable life events exerted significant additive effects on the likelihood of depression occurring in the previous 12 months in adolescent girls. Some families may be "life event prone" as a consequence of lifetime episodes of parental psychopathology.

Recent stressful life events: Their long term effects

The long-term effects of undesirable life events are reviewed. Two forms of major event that are outside the child's control, divorce and war, are discussed together with the literature investigating the impact of undesirable life events on subsequent risk for psychopathology and maladjustment. The impact of any event cannot be easily predicted without a substantial knowledge of its antecedents, nature and consequences for the child's current environmental circumstances. The indications are that some children may be life event prone as a consequence of either not being protected from adverse circumstances in the family or peer group; or contributing, through their own behavioural style, to an increased likelihood of life event occurrence. The evidence supports the notion that, whatever the origins of life events, they increase the risk of subsequent psychopathology or poor adaptation to subsequent environmental demands such as school achievement. There are marked individual differences in outcome from exposure to similar severe events. The degree of risk for either subsequent psychopathology or poor adaptation is best determined by a knowledge of life events in association with other forms of adverse or ameliorating circumstances rather than by life events alone. Psychological and physiological responses to events, as well as measures of the environment, should be incorporated in future longitudinal research to assist in explaining individual differences in outcome to similar undesirable circumstances.

Lifetime exit events and recent social and family adversities in anxious and depressed school-age children and adolescents--I

The number of lifetime exit events occurring over the lives of 7-16-year-old children was compared between cases with new onset episodes of anxiety and depression (n = 100) and community controls (n = 100). The reporting of events by adult responders appears reliable and not subject to distortions of recall. Overall the likelihood of experiencing exit events increases with age. A significant association was found between current disorder and two or more previous lifetime exit events. There is, however, a non-significant trend for those cases who experience multiple lifetime exits to be younger than the controls and to be female rather than male. These findings are uninfluenced by pubertal stage at time of onset of disorder or by diagnosis.

Lifetime exit events and recent social and family adversities in anxious and depressed school-age children and adolescents--II

The relative contribution made by three sets of social adversities preceding the onset of anxiety and depression in 8-16-year-olds is reported. These three sets of adversities are (i) lifetime exit events over the whole of the subject's life excluding those in the 12 months before onset of disorder in cases or day of interview for controls; (ii) recent family adversities; (iii) recent friendship difficulties and an absence of social achievements. Three cases compared with 35 controls experienced none of these sets of adverse social variables. Lifetime exit events exert significant independent effects on the likelihood of being a case in the presence or absence of the other two sets of factors. This suggests that the impact of multiple lifetime exits is not explained by the presence of recent adversities measured in this study. Twenty controls however experienced two or more of these sets of adversities with four experiencing all three. This suggests that some children appear protected from the pathological effects of these social adversities. The findings are not influenced by the sex or pubertal stage of the subjects and appear with equal likelihood in both anxious and depressive cases.

Annotation: recent life events and psychiatric disorder in school age children

Life events research in school age children using semi-structured interview techniques has only just begun. The advantages, however, for investigating the role of events and difficulties in children's lives outweigh the problems of data collection and training involved in the technique. Improving the collection of information also improves sensitivity at the level of measurement through a consideration of the personal meaning of social experiences. It is already apparent that recent undesirable life events effects of some importance in the genesis of anxious and depressive disorders in school age children. Investigating the social origins of emotional and behavioural disorders, and determining the role of recent social factors in the course and outcome of these conditions, will be substantially advanced by the application of these techniques in future studies.

Anorexia nervosa and food avoidance emotional disorder

A retrospective and longitudinal study was carried out on all children and adolescents who presented to a child psychiatry service over a period of 26 years to identify the nature, course, and outcome of cases meeting criteria for anorexia nervosa (n = 27). Two groups of the same age were identified for comparison, firstly those with food avoidance and emotional disorders (n = 23), and secondly those with emotional disorders but no symptoms associated with eating (n = 22). The results confirm previous reports that early onset anorexia nervosa shows a similar nature, course, and outcome to the adult disease. Being tall at presentation seems to be associated with a poor outcome. Self starvation of early onset may result in short stature in some cases. There seem to be more boys among the group in whom the disease was of early onset than would be predicted from the sex ratio among adult patients. In addition boys with anorexia nervosa may have a better prognosis than girls. Children with food avoidance emotional disorders seem to have a worse prognosis than expected for childhood emotional disorders. They may represent a middle group between those with anorexia nervosa and those with emotional disorders but no symptoms associated with eating.

Recent friendships in anxious and depressed school age children

A consecutive series of school age children (7 to 16 years) with emotional disorders (N = 100) were compared with a series of community controls (N = 100) matched for age, sex and social class for the quality of their friendships. A semi-structured interview was developed to measure the quality of friendship for this purpose. Significantly more (48%) children with emotional disorder were likely to be rated as experiencing moderate to poor friendships in the 12 months prior to the onset of symptoms than were controls (16%) in the 12 months prior to interview. Prepubertal children with moderate to poor friendship patterns were classified as either predominantly anxious or depressed. Postpubertal children with moderate to poor friendships patterns were, in contrast, predominantly anxious. These findings suggest that puberty denotes a point of change for the impact of friendship deficits on the psychopathology of emotional disorder. There were no sex differences in the clinical classification of children with moderate or poor friendship patterns.

Somatic emotional disorders in childhood and adolescence

We conducted a short-term follow-up study of severe somatic emotional disorders in 93 children and adolescents. Our aim was to investigate whether the type of physical presentation influenced the outcome in terms of symptoms and subsequent use of medical services. Three groups of patients were identified. Two groups presented with neurological symptoms and were divided into a pseudo-epilepsy group (n = 23) and other hysterias (n = 30); and a third presented with non-neurological symptoms which we termed 'other somatic presentations' (n = 40). Cases in the hysteria groups were significantly more likely to be female and post-pubertal. Polysymptomatic presentations accounted for 85% of all cases and were as common in boys as in girls at all ages. The greatest number of symptoms was found in the pseudo-epilepsy group. None of the hysterias met DSM III-R criteria for somatization disorder. Outcome in terms of residual physical symptoms and subsequent use of medical services was poorest for the pseudo-epilepsy group, and nearly 40% of these patients were judged by their general practitioner to be unchanged since discharge. By comparison, 85% of all other somatic cases were judged improved since discharge from hospital out-patients. Neither polysymtomatic presentations nor persistent physical symptoms at discharge predicted a poor outcome in any group. The general practitioners considered the psychiatric treatment to have been helpful in the majority of cases, even when the somatic outcome was rated as unchanged.

Maternal adversity and recent stressful life events in anxious and depressed children

Poor confiding relations in mothers' own lives, the presence of maternal distress and recent stressful life events focussed on children are all significantly and independently associated with emotional disorder in the school-age child. The probability of being a case is best predicted by considering the contribution of all three factors. When this is done, an additive rather than multiplicative interaction for the three variables is found. The association between these maternal factors and events focussed on the child varies with the presence or absence of caseness. There appears to be no greater probability of being anxious rather than depressed as a consequence of these three stressful factors occurring in the lives of school-age children.

The value of a neuropsychiatric examination of children with complex severe epilepsy

The feasibility and utility of a neuropsychiatric assessment in a cohort of severely impaired children with long-standing epilepsy (n = 96) is tested. This assessment is described, and some results reported in this highly selected group. Substantial difficulties in coordination were present in nearly three-quarters of the sample, and dysarthria identified in two-thirds. Psychiatric interviewing identified cases of mood disturbance that altered overall treatment of that child, and a more systematic behavioural assessment permitted clearer management of behavioural problems already known to staff. This research supports previous findings that a full neuropsychiatric evaluation is both practical and has an important place in the early assessment and ongoing management of complex childhood epilepsy.

Salivary cortisol hypersecretion in juvenile depression

Thirty depressed inpatients aged 7-16 yrs were compared for salivary hypercortisolism with a control group of 16 inpatients of mixed diagnosis matched for age and sex. Four cortisol samples were taken over a 48 hr period: 8 a.m. and 11 p.m. on the first day; then, with 1 mg of dexamethasone given immediately after the second sample, at 4 p.m. and 11 p.m. on the second day. All except the 8 a.m. value were significantly greater (P less than 0.03) in the depressed group. A 4 nmol/l cutoff for the 4 p.m. sample gave 48% sensitivity and 91% specificity for discriminating depressed cases (P = 0.03). The results indicate that the salivary method for estimating cortisol levels in children and adolescents with depression warrants further study.

The impact of recent undesirable life events on psychiatric disorders in childhood and adolescence

The timing and number of recent stressful life events occurring in the year before onset of emotional or behavioural disorder was examined in a consecutive sample of children. Overall, events increase the relative risk of psychiatric disorder by 3-6 times. Events occur throughout the 12 months, but tend to cluster in the 16 weeks nearest onset of symptoms. The number of events influences the onset of disorder: cases with multiple events are more likely to have an event within 16 weeks of onset; cases with single events are more likely to have the event 36-52 weeks before onset. Cases whose onset occurs within 4 weeks of an event may have experienced single or multiple events. The results support the concept of additivity of recent stressful events in some cases of emotional and behavioural disorders in childhood.

Do age and sex influence the association between recent life events and psychiatric disorders in children and adolescents?--A controlled enquiry

In a consecutive sample of school-aged children attending a routine child psychiatry clinic, four clinical groups were classified based on presenting signs and symptoms, conduct (N = 44), mild emotional (N = 55), severe emotional (N = 32) and somatic (N = 26). The groups were divided by age and sex and comparisons made between the groups and community subjects (N = 76) for the number of children experiencing one or more recent stressful life events. The results indicated that with the possible exception of severe emotional disorders, neither age nor sex substantially influenced the association between events and psychiatric disorder.