Schizophrenia1

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Schizophrenia1

  1. 1. Treatment of Schizophrenia (and Related Psychotic Disorders) Scott Stroup, MD, MPH 2004
  2. 2. Psychosis • Generally equated with positive symptoms and disorganized or bizarre speech/behavior • Impaired “reality testing” • A syndrome present in many illnesses – remove known cause or treat underlying illness – treat symptomatically with antipsychotic medications
  3. 3. Schizophrenia is a heterogeneous illness • Defined by a constellation of symptoms, including psychosis • Multifactorial etiology, variable course • Social/occupational dysfunction a required diagnostic criterion • Good treatment must address symptoms and social/occupational dysfunction
  4. 4. DSM-IV Schizophrenia • 2 or more of the following for most of 1 month: – Delusions – Hallucinations – Disorganized speech – Grossly disorganized or catatonic behavior – Negative symptoms • Social/occupational dysfunction • Duration of at least 6 months • Not schizoaffective disorder or a mood disorder with psychotic features • Not due to substance abuse or a general medical disorder
  5. 5. Features of Schizophrenia Positive symptoms Negative symptoms Delusions Anhedonia Hallucinations Affective flattening Avolition Social withdrawal Functional Impairments Work/school Alogia Interpersonal relationships Self-care Cognitive deficits Attention Memory Disorganization Mood symptoms Verbal fluency Depression/Anxiety Speech Aggression/Hostility Executive function Behavior Suicidality (eg, abstraction)
  6. 6. Common needs of people with schizophrenia • Symptom control • Housing • Income • Work • Social skills • Treatment of comorbid conditions
  7. 7. Challenges in the Treatment of Schizophrenia • Stigma • Impaired “insight”– no agreement on problem • Treatment “compliance” • Substance abuse very common • Violence risk • Suicide risk • Medical problems common, often unrecognized
  8. 8. Schizophrenia Treatment • Therapeutic Goals • minimize symptoms • minimize medication side effects • prevent relapse • maximize function • “recovery” • Types of Treatment • pharmacotherapy • psychosocial/psychotherapeutic
  9. 9. Treatments for schizophrenia: Strong evidence for effectiveness • Antipsychotic medications • Family psychoeducation • Assertive Community Treatment (ACT teams)
  10. 10. The First Modern Antipsychotic Chlorpromazine (Thorazine) • Antipsychotic properties discovered in 1952 • Studied originally for usefulness as a sedative • Found to be useful in controlling agitation in patients with schizophrenia • Introduced in U.S. in 1953
  11. 11. Show Video Tape Augustine
  12. 12. The Dopamine Hypothesis of Schizophrenia • All conventional antipsychotics block the dopamine D2 receptor • Conventional antipsychotic potency is directly proportional to dopamine receptor binding • Dopamine enhancing drugs can induce psychosis (e.g., chronic amphetamine use)
  13. 13. Conventional Antipsychotics FDA approval Generic Name Brand Name • 1953 chlorpromazine (Thorazine) • 1958 trifluoperazine (Stelazine) • 1958 perphenazine (Trilafon) • 1959 fluphenazine (Prolixin) • 1959 thioridazine (Mellaril) • 1967 haloperidol (Haldol) • 1967 thiothixene (Navane) • 1970 mesoridazine (Serentil) • 1975 loxapine (Loxitane) • 1977 molidone (Moban) • 1984 pimozide (Orap)
  14. 14. “Typical” antipsychotic medications (aka first-generation, conventional, neuroleptics, major tranquilizers) • High Potency (2-20 mg/day) (haloperidol, fluphenazine) • Mid Potency (10-100 mg/day) (loxapine, perphenazine) • Low Potency (300-800+ mg/day) (chlorpromazine, thioridizine)
  15. 15. Dopamine blockade effects • Limbic and frontal cortical regions: antipsychotic effect • Basal ganglia: Extrapyramidal side effects (EPS) • Hypothalamic-pituitary axis: hyperprolactinemia
  16. 16. Typical Antipsychotic limitation: Extrapyramidal side effects (EPS) • Parkinsonism • Akathisia • Dystonia • Tardive dyskinesia (TD)-- the worst form of EPS-- involuntary movements
  17. 17. Parkinsonian side effects • Rigidity, tremor, bradykinesia, masklike facies • Management: – Lower antipsychotic dose if feasible – Change to different drug (i.e., to an atypical antipsychotic) – Anticholinergic medicines: • benztropine (Cogentin) • trihexylphenidine (Artane)
  18. 18. Akathisia • Restlessness, pacing, fidgeting; subjective jitteriness; associated with suicide • Resembles psychotic agitation, agitated depression • Management: – lower antipsychotic dose if feasible – Change to different drug (i.e., to an atypical antipsychotic) – Adjunctive medicines: • propanolol (or another beta-blocker) • benztropine (Cogentin) • benzodiazepines
  19. 19. Acute dystonia • Muscle spasm: oculogyric crisis, torticollis, opisthotonis, tongue protrusion • Dramatic and painful • Treat with intramuscular (or IV) diphenhydramine (Benadryl) or benztropine (Cogentin)
  20. 20. Show Tardive Dyskinesia Videotape Abnormal Involuntary Movement Scale (AIMS) training tape
  21. 21. Tardive Dyskinesia (TD) • Involuntary movements, often choreoathetoid • Often begins with tongue or digits, progresses to face, limbs, trunk • Etiologic mechanism unclear • Incidence about 3% per year with typical antipsychotics – Higher incidence in elderly
  22. 22. Tardive Dyskinesia (TD)-2 • Major risk factors: – high doses, long duration, increased age, women, history of Parkinsonian side effects, mood disorder • Prevention: – minimum effective dose, atypical meds, monitor with AIMS test • Treatment: – lower dose, switch to atypical, Vitamin E (?)
  23. 23. Neuroleptic Malignant Syndrome (NMS) • Fever, muscle rigidity, autonomic instability, delirium • Muscle breakdown indicated by increased CK • Rare, but life threatening • Risk factors include: – High doses, high potency drugs, parenteral administration • Management: – stop antipsychotic, supportive measures (IV fluids, cooling blankets, bromocriptine, dantrolene)
  24. 24. Typical Antipsychotic limitation: Other common side effects • Anticholinergic side effects: dry mouth, constipation, blurry vision, tachycardia • Orthostatic hypotension (adrenergic) • Sedation (antihistamine effect) • Weight gain • “Neuroleptic dysphoria”
  25. 25. Typical Antipsychotic limitation: Treatment Resistance • Poor treatment response in 30% of treated patients • Incomplete treatment response in an additional 30% or more
  26. 26. The First “Atypical” Antipsychotic: Clozapine (Clozaril) • FDA approved 1990 • For treatment-resistant schizophrenia • 30% response rate in severely ill, treatment-resistant patients (vs. 4% with chlorpromazine/Thorazine) • Receptor differences: Less D2 affinity, more 5-HT 10
  27. 27. Clozapine Helps Treatment-Resistant Patients Double Blind, Randomized Trial of Clozapine vs Chlorpromazine in Treatment Resistant Patients 16 14 BPRS Schizophrenia 12 10 clozapine Factor 8 chlorpromazine 6 4 2 0 0 1 2 3 4 5 6 Weeks in Trial 11
  28. 28. Clozapine: pros and cons • Superior efficacy for positive symptoms • Possible advantages for negative symptoms • Virtually no EPS or TD • Advantages in reducing hostility, suicidality • Associated with agranulocytosis (1-2%) – WBC count monitoring required • Seizure risk (3-5%) • Warning for myocarditis • Significant weight gain, sedation, orthostasis, tachycardia, sialorrhea, constipation • Costly • Fair acceptability by patients
  29. 29. Atypical antipsychotics (aka second-generation, novel) FDA approval Generic Name (Brand Name) • 1990 clozapine (Clozaril) • 1994 risperidone (Risperdal) • 1996 olanzapine (Zyprexa) • 1997 quetiapine (Seroquel) • 2001 ziprasidone (Geodon) • 2002 aripiprazole (Abilify) • 2003 risperidone MS (Consta)
  30. 30. Defining “atypical” antipsychotic Relative to conventional drugs: • Lower ratio of D2 and 5-HT2A receptor antagonism • Lower propensity to cause EPS (extrapyramidal side effects)
  31. 31. Atypical Antipsychotics: Efficacy • Effective for positive symptoms • (equal or better than typical antipsychotics) • Clozapine is more effective than conventional antipsychotics in treatment- resistant patients • Atypicals may be better than conventionals for negative symptoms
  32. 32. New Antipsychotics and Haloperidol vs Placebo: ‘Pooled’ Data Mean BPRS Changes Olanzapine pooled r=.23*; n=574 (2 studies) Quetiapine pooled r=.23*; n=991 (4 studies) Risperidone pooled r=.28*; n=686 (3 studies) Haloperidol pooled r=.28*; n=814 (6 studies) -0.4 -0.3 0.2 0.1 0 0.1 0.2 0.3 0.4 0.5 r (95% CI) *Statistically significant. Modified from Leucht S, et al. Schizophr Res. 1999;35:51-68.
  33. 33. New Antipsychotics and Haloperidol vs Placebo: ‘Pooled’ Data Change in Negative Symptoms Olanzapine pooled r=.21*; n=582 (2 studies) Quetiapine pooled r=.19*; n=823 (4 studies) Risperidone pooled r=.20*; n=686 (2 studies) Haloperidol pooled r=.17*; n=796 (5 studies) -0.4 -0.3 0.2 -0.1 0 0.1 0.2 0.3 0.4 0.5 r (95% CI) *Statistically significant. Modified from Leucht S, et al. Schizophr Res. 1999;35:51-68.
  34. 34. Relapse Rates in 1 Year Studies: Atypical vs. Typical Antipsychotics NA CA Risk Difference (95% CI fixed) Marder, 2002 (risperidone) n/N 2/33 % 6% n/N 3/30 % Csernansky, 2002 (risperidone) 10% Risperidone pooled 41/177 23 65/188 Daniel, 1998 (sertindole) 35 Speller, 1997 (amisulpride) 43/210 21 68/218 31 Tamminga, 1993 (clozapine) 2/94 2 12/109 Essock, 1996 (clozapine) 11 Rosenheck, 1999 (clozapine) 5/29 17 9/31 Clozapine pooledd 29 Tran, 1998a (olanzapine) Tran, 1998b (olanzapine) 1/25 4 0/14 Tran, 1998c (olanzapine) 0 Olanzapine pooled 13/76 17 15/48 31 10/35 29 4/14 Total 29 24/136 18 19/76 p=0.0001 in favor of atypical drugs; -0.5 Favors 0 Favors 0.5 25 Leucht S et al. Am J Psychiatry. 2003 Atypical Antipsychotic Conventional Drug 10/45 22 2/10
  35. 35. Atypical Antipsychotics: Efficacy for Cognitive and Mood Symptoms • Atypical antipsychotics may improve cognitive and mood symptoms (Typical antipsychotics tend to worsen cognitive function) • Dysphoric mood may be more common with typical antipsychotics
  36. 36. Atypical Antipsychotics: Side Effects • Atypical antipsychotics tend to have better subjective tolerability (except clozapine) • Atypical antipsychotics much less likely to cause EPS and TD, but may cause more: • Weight gain • Metabolic problems (lipids, glucose) • ECG changes
  37. 37. Weight gain at 10 weeks 6 5 4 Kg 3 2 1 0 -1 HAL OLZ CPZ CLOZ PLB ZIP RISP Allison et al 1999
  38. 38. Summary of Antipsychotic Side Effects Side Effect Highest Liability Low Liability EPS Conventional CLZ, OLZ, QTP antipsychotics TD Conventional CLZ, OLZ, QTP antipsychotics Hyperprolactinemia Conventional CLZ, OLZ, QTP antipsychotics, RIS Sedation CPZ, CLZ, QTP, OLZ RIS Anticholinergic CPZ, CLZ RIS effects QTc prolongation ZIP, thioridazine, mesoridazine Weight gain CPZ, CLZ, OLZ HAL, ZIP Hyperglycemia, DM Atypical antipsychotics
  39. 39. Why worry about side effects? • May cause secondary symptoms, illnesses • Contribute to “noncompliance” and thus relapse
  40. 40. Current consensus on antipsychotics • Atypical antipsychotics (other than clozapine) are first choice drugs: -superiority on EPS and TD -at least equal efficacy on + and – symptoms -possible advantages on mood and cognition • BUT: -long-term consequences of weight gain and metabolic effects may alter recommendation -atypicals are very expensive
  41. 41. Real and Projected Global Sales of Antipsychotics 1990-2009 ($ millions)
  42. 42. Common factors associated with psychotic relapse •antipsychotics not completely effective •“noncompliance”—inconsistent antipsychotic medication use •stressful life events/home environment (Expressed Emotion—EE— hostility, criticism, overinvolvement) •alcohol use •drug use
  43. 43. Antipsychotic medication reduces relapse rates Risk of relapse in one year: Consistently taking medications: 20-30% Not taking medications consistently: 65-80%
  44. 44. Relapse in Schizophrenia Hogarty et al., N = 374 Prien et al., N ≈ 630 100 90 Caffey et al., N = 259 80 70 Neuroleptics % Not Relapsed 60 50 40 Placebo 30 20 10 0 3 6 9 12 15 18 21 24 27 30 Months Baldessarini RJ et al: Tardive Dyskinesia: APA Task Force Report 18, 1980
  45. 45. Consequences of relapse • Disruptive to patients lives (hospitalizations, lost jobs, lost apartments, estranged family and friends) • Risk of dangerous behaviors • May worsen course of illness • Increased costs
  46. 46. Long-acting injectable (depot) antipsychotics • Until late 2003, only haloperidol and fluphenazine available in the U.S. • Long-acting risperidone introduced late 2003 • Injections approximately every 2 weeks (fluphenazine and risperidone) or 4 weeks (haloperidol) • Goal is to decrease “noncompliance” and thus relapse--widely used but less commonly in last 10 years • Not yet clear if long-acting risperidone will reverse the trend
  47. 47. Schizophrenia Treatment Assertive Community Treatment • Multidisciplinary teams: MDs, RNs, social workers, psychologists, occupational therapists, case managers • Staff:patient ratio about 1:10 • Outreach, contact as needed • Effective at reducing hospitalizations • Cost-effective when targeted at high hospital users
  48. 48. Schizophrenia Treatment Family Psychoeducation • Provides information about schizophrenia: course, symptoms, treatments, coping strategies • Supportive • One aim is to decrease expressed emotion (hostility, criticism, etc.) • Not blaming
  49. 49. Other interventions for schizophrenia: Some evidence for effectiveness • Some types of psychotherapy • Case management • Vocational rehabilitation • Outpatient commitment • ECT (for catatonia)
  50. 50. Schizophrenia Treatment Psychotherapy (individual or group) • Supportive • Cognitive-behavioral • “Compliance” therapy • Psychoeducational • Not regressive / psychoanalytic
  51. 51. Schizophrenia Treatment Psychosocial Remedial Therapies • To improve social and vocational skills • Clubhouse model offers opportunities to socialize, transitional employment • Vocational rehabilitation—especially supported employment
  52. 52. Schizophrenia Treatment: Case management • Case manager helps coordinate treatments, provides support • Help navigating life, such as managing every day activities, transportation, etc. • Helps broker access to available services • Benefits: improves compliance, reduces stressors, helps identify and treat problems with substance use
  53. 53. Course of Schizophrenia Stages of Illness premorbid prodromal onset/ residual/ deterioration stable More symptoms Higher Function Gestation/Birth 10 20 30 40 50
  54. 54. “Deinstitutionalization” • Mid-1950s: >500,000 people in state psychiatric hospitals • Now: <<100,000 • Antispychotic medications • Civil (patients) rights movement • Community Mental Health Acts (1963-64) • Medicaid (1965-allows states to share costs with federal government) • Still an active issue in N.C.—adequacy of community-based services remain in doubt
  55. 55. Recommended books on schizophrenia • Is there no place on earth for me?, Susan Sheehan • Imagining Robert, Jay Neugeboren • Nightmare: a schizophrenia narrative, Wendell Williamson • The Quiet Room, Lori Schiller

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