Treatment of Schizophrenia (and Related Psychotic Disorders) e.com

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 e.com

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 e.com

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 e.com

Features of Schizophrenia Positive symptoms Delusions Hallucinations Cognitive deficits Attention Memory Verbal fluency Executive function (eg, abstraction) Functional Impairments Work/school Interpersonal relationships Self-care Negative symptoms Anhedonia Affective flattening Avolition Social withdrawal Alogia Mood symptoms Depression/Anxiety Aggression/Hostility Suicidality Disorganization Speech Behavior e.com

Common needs of people with schizophrenia Symptom control Housing Income Work Social skills Treatment of comorbid conditions e.com

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 e.com

Schizophrenia Treatment Therapeutic Goals minimize symptoms minimize medication side effects prevent relapse maximize function “recovery” Types of Treatment pharmacotherapy psychosocial/psychotherapeutic e.com

Treatments for schizophrenia: Strong evidence for effectiveness Antipsychotic medications Family psychoeducation Assertive Community Treatment (ACT teams) e.com

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 e.com

Show Video Tape Augustine e.com

The Dopamine Hypothesis of Schizophrenia All conventional antipsychotics block the dopamine D 2 receptor Conventional antipsychotic potency is directly proportional to dopamine receptor binding Dopamine enhancing drugs can induce psychosis (e.g., chronic amphetamine use) e.com

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) e.com

“Typical” antipsychotic medications (aka first-generation, conventional, neuroleptics, major tranquilizers) High Potency (2-20 mg/day) (haloperidol, fluphenazine) Mid Potency ( mg/day) (loxapine, perphenazine) Low Potency ( mg/day) (chlorpromazine, thioridizine) e.com

Dopamine blockade effects Limbic and frontal cortical regions: antipsychotic effect Basal ganglia: Extrapyramidal side effects (EPS) Hypothalamic-pituitary axis: hyperprolactinemia e.com

Typical Antipsychotic limitation: Extrapyramidal side effects (EPS) Parkinsonism Akathisia Dystonia Tardive dyskinesia (TD)-- the worst form of EPS-- involuntary movements e.com

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) e.com

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 e.com

Acute dystonia Muscle spasm: oculogyric crisis, torticollis, opisthotonis, tongue protrusion Dramatic and painful Treat with intramuscular (or IV) diphenhydramine (Benadryl) or benztropine (Cogentin) e.com

Show Tardive Dyskinesia Videotape Abnormal Involuntary Movement Scale (AIMS) training tape e.com

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 e.com

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 (?) e.com

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) e.com

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” e.com

Typical Antipsychotic limitation: Treatment Resistance Poor treatment response in 30% of treated patients Incomplete treatment response in an additional 30 % or more e.com

10 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 e.com

11 Clozapine Helps Treatment-Resistant Patients e.com

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 e.com

Atypical antipsychotics (aka second-generation, novel) FDA approval Generic Name (Brand Name) 1990clozapine (Clozaril) 1994risperidone (Risperdal) 1996olanzapine (Zyprexa) 1997quetiapine (Seroquel) 2001ziprasidone (Geodon) 2002aripiprazole (Abilify) 2003risperidone MS (Consta) e.com

Defining “atypical” antipsychotic Relative to conventional drugs: Lower ratio of D 2 and 5-HT 2A receptor antagonism Lower propensity to cause EPS (extrapyramidal side effects) e.com

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 e.com

New Antipsychotics and Haloperidol vs Placebo: ‘Pooled’ Data Mean BPRS Changes r (95% CI) *Statistically significant. Modified from Leucht S, et al. Schizophr Res. 1999;35: 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) e.com

New Antipsychotics and Haloperidol vs Placebo: ‘Pooled’ Data Change in Negative Symptoms r (95% CI) *Statistically significant. Modified from Leucht S, et al. Schizophr Res. 1999;35: 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) e.com

Relapse Rates in 1 Year Studies: Atypical vs. Typical Antipsychotics p= in favor of atypical drugs; Leucht S et al. Am J Psychiatry Favors Conventional Drug Favors Atypical Antipsychotic Marder, 2002 (risperidone) Csernansky, 2002 (risperidone) Risperidone pooled Daniel, 1998 (sertindole) Speller, 1997 (amisulpride) Tamminga, 1993 (clozapine) Essock, 1996 (clozapine) Rosenheck, 1999 (clozapine) Clozapine pooled d Tran, 1998a (olanzapine) Tran, 1998b (olanzapine) Tran, 1998c (olanzapine) Olanzapine pooled Total 2/336%3/3010% 41/ / / / /94212/ /29179/3129 1/2540/140 13/761715/ /35294/ / / /45222/1020 6/48133/ / / / / / /61423 Risk Difference (95% CI fixed) NACA n/N%n/N% e.com

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 e.com

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 e.com

Weight gain at 10 weeks Allison et al 1999 Kg e.com

Summary of Antipsychotic Side Effects Side EffectHighest LiabilityLow Liability EPSConventional antipsychotics CLZ, OLZ, QTP TDConventional antipsychotics CLZ, OLZ, QTP HyperprolactinemiaConventional antipsychotics, RIS CLZ, OLZ, QTP SedationCPZ, CLZ, QTP, OLZRIS Anticholinergic effects CPZ, CLZRIS QTc prolongationZIP, thioridazine, mesoridazine Weight gainCPZ, CLZ, OLZHAL, ZIP Hyperglycemia, DMAtypical antipsychotics e.com

Why worry about side effects? May cause secondary symptoms, illnesses Contribute to “noncompliance” and thus relapse e.com

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 e.com

Real and Projected Global Sales of Antipsychotics ($ millions) e.com

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 e.com

Antipsychotic medication reduces relapse rates Risk of relapse in one year: Consistently taking medications: 20-30% Not taking medications consistently: 65-80% e.com

Baldessarini RJ et al: Tardive Dyskinesia: APA Task Force Report 18, 1980 Months % Not Relapsed Hogarty et al., N = 374 Prien et al., N  630 Caffey et al., N = 259 Placebo Neuroleptics Relapse in Schizophrenia e.com

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 e.com

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 e.com

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 e.com

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 e.com

Other interventions for schizophrenia: Some evidence for effectiveness Some types of psychotherapy Case management Vocational rehabilitation Outpatient commitment ECT (for catatonia) e.com

Schizophrenia Treatment Psychotherapy (individual or group) Supportive Cognitive-behavioral “Compliance” therapy Psychoeducational Not regressive / psychoanalytic e.com

Schizophrenia Treatment Psychosocial Remedial Therapies To improve social and vocational skills Clubhouse model offers opportunities to socialize, transitional employment Vocational rehabilitation—especially supported employment e.com

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 e.com

Course of Schizophrenia Gestation/Birth premorbid prodromal onset/ deterioration residual/ stable Stages of Illness Higher Function More symptoms e.com

“Deinstitutionalization” Mid-1950s: >500,000 people in state psychiatric hospitals Now: <<100,000 Antispychotic medications Civil (patients) rights movement Community Mental Health Acts ( ) 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 e.com