Audio-Digest Foundation: psychiatry

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Audio-Digest FoundationPsychiatry


Volume 36, Issue 17
September 7, 2007

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CHILD AND ADOLESCENT DEPRESSION

From Stress, Vulnerability, and Serious Mental Disorders: Bridging the Gap from Science to Intervention, presented by the American Society for Adolescent Psychiatry and the University of Texas Southwestern Medical Center

Gabrielle A. Carlson, MD, Professor of Psychiatry and Pediatrics, State University of New York at Stony Brook, and Director, Child and Adolescent Psychiatry, Stony Brook University School of Medicine

DUMPS: mnemonic for remembering symptoms of depression in young people; D stands for definite personality change; child or adolescent who previously has been good student or “nice kid,” gradually or suddenly becomes defiant, disagreeable, distant, or disorganized; U stands for undesirable drop in grades; adolescent whose grades fall, eg, from As to Cs over one semester, who starts to avoid school altogether, or who develops “school phobia”; M stands for morbid preoccupation; eg, adolescent whose compositions dwell on death and disaster, who voices suicidal thoughts, or who engages in self-destructive behavior; P stands for pessimism and/or psychosis; adolescent grim, depressed, or demoralized and finds no joy in anything; psychosis not common in adolescents, but does occur, and often manifested by sudden onset of depressive hallucinations and/or delusions; S stands for somatic complaints without physical basis; adolescent spends more time in nurse’s office than in classroom
Epidemiology: in community samples, depression rare in preschool-age children (<1%), 2% to 4% in school-age children, and 8% in adolescents; in clinical samples, rates higher (in speaker’s clinic, 1% in preschool-age children, 15% in school-age children, and 40% in adolescents); rates do not take comorbidity into account; prior to puberty, rates equal in boys and girls; after puberty, rates increase in girls and decrease in boys (thought to be because girls respond more to interpersonal events, tend to respond to sad moods with ruminative cognitive style, and enter puberty earlier, with attendant biologic, psychosocial, and hormonal changes); cohort effect—shows earlier age of onset with each successive decade after World War II (may be more applicable to comorbid or secondary depression)
Risk factors: prepubertal depression often comorbid with externalizing disorder (eg, attention-deficit/hyperactivity disorder [ADHD] or oppositional defiant disorder), and risk factors for depression same as those for externalizing disorders (ie, family discord, parental criminality, and substance abuse); prepubertal group also includes children with multigenerational family “loading” for anxiety and bipolar disorder; in adolescents, risk factors include early onset of puberty (especially in girls), substance abuse, decreased supervision, and sleep deprivation
Comorbidity: 40% to 70% of depressed youth have comorbid disorder that almost always precedes onset of depression; 20% to 50% have 2 comorbid disorders; anxiety disorders—occur in 30% to 80%; separation anxiety most common in children, social phobia in teens; anxiety disorder precedes onset of depression in about two-thirds of patients, but does not affect course of depression; learning and language disorders can precipitate depression if other children treat sufferer unkindly or shun him or her; substance abuse common comorbidity among adolescents, who often use tobacco, alcohol, or drugs to self-medicate depression
Developmental aspects of mood disorders in children: disinhibition, activation, or manic switching more common in prepubertal children (actual rates controversial, but one study found 10% in prepubescent children, 3% in teens); in younger children, presenting symptoms usually somatic, and pervasive anhedonia less apparent; visual hallucinations not uncommon, and speaker has “never known what to make of that; I don’t think they carry the same significance that they do in older people with psychosis”; she posits that hallucinations in younger children probably not evidence of psychotic depression; teenagers—irritability prominent symptom; sometimes have atypical depression, in which they sleep more, eat more, and are lethargic instead of insomniac; by adolescence, psychosis begins to resemble adult psychosis; in adults, “full-fledged” melancholia and delusions seen
Assessment: clinical developmental interview important in understanding historical, contextual, and temporal factors; determine onset of depression in relationship to other problems; obtain information from patient, parents, and school; structured interviews can be helpful if therapist good at interviewing and force therapist to ask “all the questions,” even about things that child or parents do not bring up; ideally, before seeing patient, have child and parents complete Child and Adolescent Symptom Inventory and Child Behavior Checklist and Report Form (also called Achenbach Scale); parents may misunderstand intention of questions, so review answers with them; while talking to parents, have child complete Youth Inventory, depression and anxiety rating scale, and sentence-completion task; some children who are reluctant to talk about their problems may be willing to write about them
Look for: psychiatric and medical problems; severity; suicidality; comorbidity; psychosocial stressors; cognitive ability; use information to determine whether child sick enough to need hospitalization; decide what needs to be treated first, or whether conditions can be treated simultaneously (depression and substance abuse probably should be treated first)
Neurobiologic correlates: in some respects, childhood and adolescent depression similar to adult depression, and in other respects, different; children do not seem to have same neurobiologic response to various probes (eg, cortisol secretion, corticotropin stimulation, serotonin probes, immunity indices) as adults, and response to probes may differ even between children and adolescents; known that neurobiologic systems implicated in depression not fully developed in children and teens, but more research needed to understand developmental differences between child, adolescent, and adult mood disorders
Genetics: monozygotic and dizygotic twin studies seem to show genetic diathesis to depression, although when information collected from parents, results differ from those obtained from their child (ie, information provided by parents indicates depression very heritable, but information provided by child indicates more environmental and psychosocial influences); however, “clearly it’s a familial disorder”; studies show that offspring of depressed parents 3 times more likely to develop depression and that early-onset parental depression increases risk of offspring having depression, compared to psychiatric and nonpsychiatric controls
Psychosocial stressors that contribute to development of depression include: divorce; loss; penetrating sexual abuse; certain medical conditions; learning disabilities; poverty; expressed emotion; living with parent who is highly judgmental and critical; also, some temperaments seem more prone to development of depression
Outcomes: children usually do not spend entire day moping, but when asked about depressive symptoms, often report that they occur more days than not during week; episodes can last 6 to 9 mo; although remission rate high, relapse rate also high; likelihood of developing adult depression greater if individual has depression in adolescence than in childhood; 4% to 49% of children with early-onset depression go on to develop bipolar disorder (“that’s a lot of slippage”), but speaker believes it is probably 10% to 20%; risk factors include acute severe depression, psychomotor-retarded depression with psychosis, family history of bipolar disorder, and possibly pharmacologically induced mania; adverse outcomes include suicide, drug and alcohol abuse, social impairment, school dropout, and adult depression
Treatments: empirically supported treatments include cog-nitive behavioral therapy (CBT), interpersonal psychotherapy (IPT), selective serotonin reuptake inhibitors (SSRIs; mostly fluoxetine), and electroconvulsive therapy (ECT)
CBT: based on premise that changing thoughts and behavior improves mood (“cognitive restructuring”); remission rates good but, for unknown reasons, some studies show better outcomes than others
IPT: focuses on interpersonal issues such as recent loss, interpersonal roles and difficulties, role transitions, and personal values; teaches effective communicating; outcomes favorable, but studies small
Medications: select medication by severity of depression; in most studies, the more severe the depression, the less likely it is to respond to CBT or IPT; important considerations include how other family members feel about having child or adolescent on medication, recurrence or chronicity of depression, failure to respond to psychotherapy, unavailability of therapist trained in psychotherapy, and psychosocial stressors that might interfere with medication use; begin with psychoeducation of patient and family; discuss treatment options and supportive evidence; visits more intense at beginning of therapy, can be less intense after child responds; reassess treatment at regular intervals—if no response or partial response by 6 wk, decide whether to continue current treatment regimen or to change; may take up to 12 wk to get robust response to antidepressant; establish targets and measure progress with rating scales; extensive medical work-up not necessary unless history suggests it; probably wise to obtain baseline blood tests and thyroid levels; dose ranges wider for children and adolescents than for adults; no data indicating differences in side effects based on sex; monitor child for bipolar switching and for suicide risk; other issues include child’s age, presence of comor-bidities, level of premorbid functioning, family competence, where medication used, and cost and availability of medication
More on medications: if patient has history of mania or bipolar disorder, start with mood stabilizer; if evidence of psychosis, start with antipsychotic agent (currently, more data available for atypical than typical antipsychotics); fluoxetine—SSRI with most consistent positive response; start teenagers at 10 mg/day, younger children at 5 mg/day; doses can be increased up to 60 to 80 mg/day; if no response, switch to another SSRI or to bupropion
Treatment of Adolescent Depression Study (TADS): showed children who received combined CBT and fluoxetine treatment did best, but not much difference between combination and fluoxetine alone; CBT and placebo similar; at end of study, 80% of patients no longer met criteria for depression, but while response rate “wasn’t bad,” remission rate “wasn’t so hot”; absolute benefit for combined treatment 35%, for fluoxetine alone 26%, and for CBT alone 7%; few other studies exist in children and adolescents
Summary of continuation treatment: 90% of children and adolescents recovered from index episode of depression over 1 to 2 yr, whether or not they received medication; risk for recurrence appeared to be greater in patients who stopped fluoxetine or sertraline, compared to those who continued medication
How to treat: residual symptoms shown to predict relapse; longer initial treatment results in fewer residual symptoms; general consensus to treat 4 to 6 mo after initial treatment; most suggest full-dose continuation treatment for 6 to 9 mo; if child has multiple depressions, full-dose continuation treatment for up to 5 yr
No or partial remission: may be due to patients not taking medications; check for noncompliance, parental depression, cohort substance abuse, comorbid conditions, undiagnosed mixed states, medical conditions, and rapid drug metabolism
Electroconvulsive therapy: no controlled trials, but many literature reviews suggest ECT helpful for patient who is very depressed or very manic, or who did not respond to medication trial; no absolute contraindications; assessment must include psychiatric, medical, and cognitive factors before ECT, and at 3 and 6 mo after ECT; obtain informed consent
Adverse events associated with treatment: include activation and behavioral disinhibition, symptoms of which include irritability, hyperactivity, inappropriate behavior, euphoria, akithisia, agitation, and suicidality; if symptoms stop when medication dose lowered or discontinued, then side effects probably from medication; suicide rates tend to be higher in younger children than in teenagers and higher in teenagers than in adults; activation rates vary with SSRI, but overall rates 10% in younger children and 3% to 4% in teens
Serotonin syndrome: some people think activation rep-resents mild serotonin syndrome; activation, nausea, diarrhea, dizziness, and chills relatively common; serotonin syndrome can be fatal and needs to be monitored
Conclusions: monitor suicide risk; educate family and patient; provide explanatory models; treat parent if depressed; find appropriate therapeutic environment at home, in classroom, or out of home if necessary; develop realistic expectations (“control what you can control”); identify and use patient resources; teach mastery experiences (accomplishing small tasks important); encourage generation of alternative beliefs; encourage appropriate expression of thoughts and feelings

Suggested Reading

Carlson GA et al: What is new in bipolar disorder and major depressive disorder in children and adolescents. Child Adolesc Psychiatr Clin N Am 11:xv, 2002; Carlson GA: Mania and ADHD: comorbidity or confusion. J Affect Disord 51:177, 1998; Carlson GA: The challenge of diagnosing depression in childhood and adolescence. J Affect Disord 61 Suppl 1:3, 2000; Cheung AH et al: Review of the efficacy and safety of antidepressants in youth depression. J Child Psychol Psychiatry 46:735, 2005; Daviss WB et al: Bupropion sustained release in adolescents with comorbid attention-deficit/hyperactivity disorder and depression. J Am Acad Child Adolesc Psychiatry 40:307, 2001; Emslie GJ et al: Fluoxetine in child and adolescent depression: acute and maintenance treatment. Depress Anxiety 7:32, 1998; Emslie GJ et al: Fluoxetine treatment for prevention of relapse of depression in children and adolescents: a double-blind, placebo-controlled study. J Am Acad Child Adolesc Psychiatry 43:1397, 2004; Emslie GJ et al: Venlafaxine ER for the treatment of pediatric subjects with depression: results of two placebo-controlled trials. J Am Acad Child Adolesc Psychiatry 46:479, 2007; Findling RL et al: The relevance of pharmacokinetic studies in designing efficacy trials in juvenile major depression. J Child Adolesc Psychopharmacol 16:131, 2006; Hughes CW et al: Texas Children's Medication Algorithm Project: update from Texas Consensus Conference Panel on Medication Treatment of Childhood Major Depressive Disorder. J Am Acad Child Adolesc Psychiatry 46:667, 2007; Kaufman J et al: Are child-, adolescent-, and adult-onset depression one and the same disorder? Biol Psychiatry 49:980, 2001; Keller MB et al: Efficacy of paroxetine in the treatment of adolescent major depression: a randomized, controlled trial. J Am Acad Child Adolesc Psychiatry 40:762, 2001; Kim-Cohen J et al: Prior juvenile diagnoses in adults with mental disorder: developmental follow-back of a prospective-longitudinal cohort. Arch Gen Psychiatry 60:709, 2003; Klein DN et al: Toward guidelines for evidence-based assessment of depression in children and adolescents. J Clin Child Adolesc Psychol 34:412, 2005; March J et al: Fluoxetine, cognitive-behavioral therapy, and their combination for adolescents with depression: Treatment for Adolescents With Depression Study (TADS) randomized controlled trial. JAMA 292:807, 2004; Rice F et al: The genetic aetiology of childhood depression: a review. J Child Psychol Psychiatry 43:65, 2002; Rutter M et al: Continuities and discontinuities in psychopathology between childhood and adult life. J Child Psychol Psychiatry 47:276, 2006; Wagner KD et al: An open-label trial of divalproex in children and adolescents with bipolar disorder. J Am Acad Child Adolesc Psychiatry 41:1224, 2002; Weiss B et al: Developmental differences in the phenomenology of depression. Dev Psychopathol 15:403, 2003.

Educational Objectives

The goal of this program is to improve diagnosis and treatment of child and adolescent depression. After hearing and assimilating this program, the clinician will be better able to:
Use the mnemonic “DUMPS” to remember the symptoms of depression in young people.
List the risk factors for development of depression in young people.
Discuss the developmental aspects of mood disorders in children and adolescents.
Assess children and adolescents for depression.
Describe treatment options, including cognitive behavioral therapy, interpersonal psychotherapy, medications, and electroconvulsive therapy, for children and adolescents with depression.

Faculty Disclosure

In adherence to ACCME Standards for Commercial Support, the Audio-Digest Foundation requires all faculty members to disclose relevant financial relationships within the past 12 months that might create any personal conflict of interest. Any identified conflicts were resolved to ensure that this educational activity promotes quality in health care education and not a proprietary business or commercial interest. For this program, Dr. Carlson disclosed she is a speaker for Shire and Lilly; is a consultant for Lilly, Janssen, Bristol-Myers Squibb, and Otsuka; and does contracted research for Lilly, Janssen, BMS, Otsuka, and Sanofi-Aventis.

Acknowledgements

Dr Carlson was recorded at Stress, Vulnerability and Serious Mental Disorders: Bridging the Gap from Science to Intervention, held March 8-11, 2007, and sponsored by the American Society for Adolescent Psychiatry and the University of Texas Southwestern Medical Center. The Audio-Digest Foundation thanks Dr. Carlson and the sponsors for their cooperation in the production of this program.

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