Deliberate self-harm in adolescents

PURPOSE OF REVIEW

To review literature on young people who deliberately harmed themselves that was published between March 2005 and December 2006 in English language journals.

RECENT FINDINGS

Recent follow-up studies have confirmed that deliberate self-harm at a young age is an important indication of mental health problems in later life, including a strongly increased risk of subsequent suicidal behavior. Main recent research includes study of risk factors and predictors of deliberate self-harm, and continuing study of the effects of pharmacological treatment, in particular selective serotonin reuptake inhibitors, in children and adolescents.

SUMMARY

Recent findings regarding risk factors of adolescent deliberate self-harm confirm the importance of depressive disorders, deficient problem solving, exposure to suicidal behavior and familial characteristics. More biological studies of young people are required to provide evidence regarding neurobiological correlates of risk factors of suicidality in young people. The association between the use of antidepressants in depressed children and adolescents and the emergence of suicidal behavior continues to be a matter of debate due to the conflicting evidence from ecological or observational studies and meta-analyses. Although psychotherapeutic approaches have been examined less extensively, the results regarding cognitive behavior therapy in depressed and suicidal young people are clearly positive. Measures to prevent suicidal behavior in young people require further research.

Suicide prevention in adolescents: a controlled study of the effectiveness of a school-based psycho-educational program

BACKGROUND

Psycho-educational programs are among the most commonly applied suicide prevention approaches for young people. This study examined the effectiveness of these programs in a controlled study by assessing the effect on knowledge, attitudes, coping and hopelessness.

METHOD

Fourteen- to 18-year-old students were administered structured questionnaires before and after the program to assess the effect on knowledge, attitudes, coping and hopelessness.

RESULTS

The program had no effect on coping styles and levels of hopelessness. However, a positive effect on knowledge could be identified and an interaction effect of the program with gender on attitudes was also found. A negative impact of the program could not be found. Results indicated effects of gender and pre-test on knowledge, attitudes and coping.

CONCLUSIONS

The findings from this study suggest that psycho-educational programs in schools may influence knowledge about suicide and attitudes towards suicidal persons but may not affect the use of coping styles or levels of hopelessness.

Suicide among adolescents. A psychological autopsy study of psychiatric, psychosocial and personality-related risk factors

BACKGROUND

The suicide rate among young males in Belgium has doubled over the last decade. As more knowledge about risk factors is required to develop national prevention strategies, we investigated adolescent suicides using the psychological autopsy method.

METHODS

A total of 32 informants were interviewed regarding 19 suicide cases (aged 15-19). A semi-structured interview schedule, constructed by Houston et al. (J Affect Disord 63:159-170, 2001), was used.

RESULTS

All adolescents were suffering from one or more mental disorder(s) at the time of their death, and almost half of them were diagnosed with personality disorders. Adjustment disorders were diagnosed in one fifth of the sample, which appears to be relevant in view of the multiple life events and other psychosocial problems which adolescents were facing shortly before death. This suggests that difficulties in coping with stressful psychosocial problems are important in the course of the suicidal process. Only a small minority was receiving treatment for their disorders.

CONCLUSIONS

Mental disorders, commonly untreated and combined with personality disorders and psychosocial problems, are frequently found in young suicide victims. This study suggests that education in the diagnosis and treatment of depression, adjustment disorders and suicide is important in the prevention of suicide.

Adjustment disorder and the course of the suicidal process in adolescents

BACKGROUND

Adjustment disorders are often associated with suicidal behaviour but there is little information regarding the nature of the relationship and the effect of adjustment disorders on the suicidal process. The authors' goal was to investigate the association of adjustment disorders (with depressed mood) and suicide in adolescents by means of a psychological autopsy study.

METHOD

Relatives and other informants of 19 suicide victims were interviewed by means of a semi-structured interview schedule. Differences in duration of the suicidal process between suicide victims diagnosed with adjustment disorder and suicide cases diagnosed with other psychiatric disorders were examined.

RESULTS

The suicidal process was significantly shorter in suicide victims diagnosed with adjustment disorder compared with suicide cases diagnosed with other disorders. No indications of a history of emotional or behavioural problems during early adolescence were found in suicide cases diagnosed with adjustment disorder.

LIMITATIONS

The study sample consists of a small sample size and retrospective interviews of relatives were used.

CONCLUSIONS

The suicidal process in suicide victims diagnosed with adjustment disorder appears to be short and rapidly evolving without any prior indications of emotional or behavioural problems. The importance of assessing the suicidal risk in patients diagnosed with adjustment disorder is underlined.

Estimates of regional cerebral blood flow and 5-HT2A receptor density in impulsive, aggressive dogs with 99mTc-ECD and 123I-5-I-R91150

Impulsive aggression in dogs has an important impact on human public health. Better insight into the pathophysiology of this phenomenon could lead to more adequate diagnosis and treatment. Indirect in vivo research on peripheral body fluids and post-mortem studies in impulsive animals and humans indicate a deficient serotonergic system in general and disturbances in the serotonin-2A (5-HT2A) receptor in particular. In this study, brain perfusion and the 5-HT2A receptors were examined in impulsive, aggressive dogs, in comparison with a group of normally behaving animals. In order to decide which dogs to include in this study, owners were asked to describe the general behaviour of the dogs, the circumstances in which aggression occurred and their conduct during aggressive acts. Finally, 19 dogs were retained for this study, showing, according to different behavioural specialists, disinhibited dominance aggression. Functional imaging studies were performed on all these dogs. Single-photon emission tomography (SPET) was used to measure regional brain perfusion using technetium-99m labelled ethyl cysteinate dimer (ECD). The 5-HT2A receptor binding properties were investigated using the selective radioligand iodine-123 labelled 5-I-R91150. A significant increase in uptake of the 5-HT2A radioligand was noted in all cortical areas. No significant alterations were found in regional cortical perfusion, indicating that the increased binding index was not a consequence of increased tracer delivery. This study supports a role for the serotonergic system in canine impulsive aggression.

The neurobiology of suicide and suicidality

OBJECTIVE

To investigate the current state of knowledge regarding the neurobiology of suicide and suicidality.

METHOD

The literature on the neurobiology of suicidality and suicide was reviewed.

RESULTS

There is clear evidence that the activity of 3 neurobiological systems has a role in the pathophysiology of suicidal behaviour. This includes hyperactivity of the hypothalamo-pituitary-adrenal axis, dysfunction of the serotonergic (5-HTergic) system, and excessive activity of the noradrenergic system. While the first and the last system appear to be involved in the response to stressful events, dysfunction of the serotonergic system is thought to be trait-dependent and associated with disturbances in the regulation of anxiety, impulsivity, and aggression. It can be hypothesized that neurobiological dysfunctions mediate the occurrence of suicidal behaviour through the disturbed modulation of basic neuropsychological functions.

CONCLUSION

Increasing insight into the neurobiological basis of suicidal behaviour suggests that serotonin (5-HT) agonists have an important role in the treatment and prevention of suicidal behaviour. Studies of the efficacy of such drugs have, however, been disappointing. Because suicidal behaviour continues to be a major public health problem, further study is clearly needed, including research on the effect of combined pharmacologic and psychotherapeutic approaches.