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Biomedical subjects

M R Liebowitz

Publications and source records attributed to M R Liebowitz.

At least 55 records · Page 3Linked to original sources
PubMed1996

Issues in the design of trials for the evaluation of psychopharmacological treatments for social phobia.

Social phobia was neglected by psychopharmacologically oriented researchers until the past decade. Benefitting from the experience with other anxiety and other affective disorders, however, and also from unique interdisciplinary collaborative arrangements between psychopharmacological and cognitive behavioral investigators, treatment research in social phobia has made remarkable progress in the past few years. Not only has the field itself advanced, but investigative models have been created that are now being adopted and adapted for other disorders.

Clinical Trials as Topic↗
PubMed1996

Issues in the design of trials for the evaluation of psychosocial treatments for social phobia.

Scientific evaluation of the efficacy of treatments for mental disorders is an undertaking of critical importance. However, the design of trials evaluating psychosocial treatments may determine whether or not they will ultimately provide meaningful data that may guide further treatment development. In this paper, we address areas of methodological concern in the evaluation of psychosocial treatments. These are discussed in the context of psychosocial treatments for social phobia, whether they be the sole focus of an outcome trial, compared to other psychosocial or pharmacological treatments, or combined with pharmacotherapies. We address issues of patient representativeness, adequacy of treatment as conducted, selection and design of control conditions, and assessment of change over the course of treatment for social phobia. Most of these issues have implications for the evaluation of pharmacotherapies for social phobia as well.

Behavior Therapy↗
PubMed1996

Specificity of neuropsychological impairment in obsessive-compulsive disorder: a comparison with social phobic and normal control subjects.

Specificity of neuropsychological dysfunction in obsessive-compulsive disorder (OCD) was assessed by comparing neuropsychological performance in 65 OCD patients, 17 social phobic patients, and 32 normal control subjects. Although both patient groups showed visual constructional impairment relative to normal subjects, only patients with social phobia showed executive dysfunction. Nonconcurrent state anxiety did not correlate with neuropsychological performance. Among anxiety disorders, neuropsychological dysfunction may not be specific to OCD, but the functions implicated may differ across patient groups.

Adolescent↗
PubMed1996

The offensive subtype of Taijin-kyofu-sho in New York City: the phenomenology and treatment of a social anxiety disorder.

BACKGROUND: Taijin-kyofu-sho (TKS) is thought to be a common, culture-bound disorder of social anxiety in Japan and Korea. Its phenomenology has been noted to overlap with that of social phobia. The "offensive type" of TKS, which has no direct parallel in Western classification, is characterized by a fear of offending others in social situations, which leads to social avoidance. There has been only one case of offensive-type TKS reported in the United States, and this case was not regarded as a variant of social phobia. METHOD: The phenomenology and treatment of six patients who presented to New York City anxiety disorders research clinic psychiatrists with the offensive type of TKS are described. Features of TKS are compared with those of social phobia, as described in Western countries. Treatment outcomes for four patients are discussed and compared with TKS treatment experience in Japan and Korea and with treatment outcome in social phobia. RESULTS: In this anxiety clinic sample, features of the offensive type of TKS showed much overlap with symptoms of social phobia. Only two of four treated patients in this TKS sample received adequate trials of medication known to be effective for social phobia, and one of the two improved significantly. CONCLUSION: The offensive type of TKS may not be as culture-bound as previously thought. Further study is needed to determine whether such cases respond to medications and to cognitive-behavioral approaches that are effective for social phobia. How to classify the offensive type of TKS is uncertain, but social phobia should be considered in the differential diagnosis.

Adolescent↗
PubMed1996

The pharmacotherapy of hypochondriasis.

This article addresses the diagnosis and pharmacologic treatment of hypochondriasis. Diagnostic issues are reviewed briefly, focusing on the need for a thorough medical re-consideration of the patient's presenting symptoms. Because the diagnosis rests on the absence of a medical cause to account for the presence or intensity of the physical symptoms, neither self-report forms nor non-medically trained interviewers should be used to definitively make the diagnosis of hypochondriasis. We review the case reports and small uncontrolled series on the pharmacologic treatment of hypochondriasis, emphasizing the growing body of evidence suggesting particular efficacy for the serotonin reuptake inhibitors. Preliminary results from an ongoing placebo-controlled trial of hypochondriasis using fluoxetine are presented. While the controlled trial supports the open treatment data in revealing a high rate of improvement among patients completing treatment with fluoxetine, it also demonstrates that many patients respond to placebo as well. In conclusion, although the traditional nihilistic attitude regarding the possibility of successful treatment of hypochondriacs appears no longer warranted, the question remains open as to whether SSRIs have particular efficacy in patients with hypochondriasis or whether nonspecific treatment effects are the primary cause of improvement.

Humans↗
PubMed1995

Effects of intravenous diazepam pretreatment on lactate-induced panic.

The psychological and physiological effects of acute low-potency benzodiazepine administration on lactate-induced panic were examined in 10 patients with panic disorder (PD). The patients, who had panicked during a standard sodium-lactate infusion, underwent a repeat infusion modified by pretreatment with intravenous diazepam (5 mg). Acute Panic Inventory (API) scores preceding the second lactate infusion, which were associated with diazepam pretreatment, were significantly reduced in compared with those measured before the first lactate infusion. However, the second visit "fear of doom" item of the API was significantly reduced relative to the same time point of the first visit 35 min before lactate infusion, when diazepam had not yet been administered. Thus, the reduction of prelactate anxiety preceding the second infusion appeared to reflect both pharmacological and nonpharmacological contributions. The diazepam pretreatment condition was associated with a significantly increased infusion duration and a significant attenuation of rate of API symptom increase in response to lactate. Despite significant attenuation of lactate infusion effects associated with the diazepam pretreatment condition, 7 of 10 patients experienced a second panic attack. This pilot study suggests that diazepam pretreatment is associated with a marked reduction of symptomatic response during a second lactate infusion, although the magnitude of attenuation observed was insufficient to block lactate-induced panic in a majority of lactate-vulnerable PD patients.

Adult↗
PubMed1995

Generalized social phobia. Reliability and validity.

OBJECTIVE: To investigate the reliability and validity of DSM-III-R "generalized" social phobia by examining interrater agreement and comparing patients with generalized and "nongeneralized" social phobia on demographic characteristics, clinical variables, and familial social phobia. DESIGN: Two senior clinicians classified 129 patients attending an anxiety clinic as having DSM-III-R social phobia that is generalized (fears most social situations) or nongeneralized (less than most) based on independent narrative review. RESULTS: Good reliability was achieved (kappa = 0.69). Patients with generalized social phobia were more often single, had earlier onsets of social phobia, had more interactional fears, and had higher rates of atypical depression and alcoholism. Familial social phobia was more common among patients with generalized social phobia than patients with nongeneralized social phobia and controls, with no difference between the latter two groups. CONCLUSIONS: Generalized social phobia (1) can be distinguished reliably from nongeneralized social phobia, (2) is a valid subtype, and (3) may characterize a familial form of the disorder.

Adult↗
PubMed1995

Sodium lactate response and familial risk for panic disorder.

OBJECTIVE: The authors used the family study method to test the hypothesis that sodium lactate response defines two subtypes of panic disorder. METHOD: Rates of panic disorder in 142 first-degree relatives of patients who responded to sodium lactate, 88 first-degree relatives of patients who did not respond to sodium lactate, and 231 first-degree relatives of never mentally ill subjects were compared. RESULTS: No difference in familial transmission of panic disorder was found between the two patient groups. CONCLUSIONS: The findings do not support the notion that panic disorder subtypes are associated with lactate sensitivity.

Biomarkers↗
PubMed1995

Persistence of blunted human growth hormone response to clonidine in fluoxetine-treated patients with panic disorder.

OBJECTIVE: The authors determined the effects of antipanic treatment with fluoxetine on human growth hormone (GH) response to the alpha 2 agonist clonidine. METHOD: Seventeen patients with panic disorder and 15 healthy volunteers were challenged with clonidine. Thirteen of the patients and 12 of the volunteers were given a second challenge with clonidine 12 weeks later. The patients received open fluoxetine and the healthy subjects received no treatment between challenges. Subjects with high baseline human GH levels (greater than 2 ng/ml) at the first and second challenges were excluded from further analysis. RESULTS: The patients with panic disorder (N = 13 for the first challenge and N = 9 for the second) had significantly lower human GH responses to clonidine than the healthy subjects (N = 14 during the first challenge and N = 9 for the second) during both challenges, despite clinical improvement in eight of the nine patients at the time of the second challenge. CONCLUSIONS: Blunted secretion of human GH in response to clonidine in patients with panic disorder persists despite clinical recovery.

Clonidine↗
PubMed1994

Ataque de nervios and panic disorder.

OBJECTIVE: Ataque de nervios ("attack of nerves") is an illness category used frequently by Hispanic individuals to describe one or more particular symptom complexes. A review of the literature on ataque suggested some overlap with panic disorder. This study investigated the overlap with panic disorder as well as other DSM-III-R axis I disorders. METHOD: Hispanic subjects seeking treatment at an anxiety disorders clinic (N = 156) were assessed with a specially designed questionnaire for self-report of ataque de nervios and panic symptoms and with structured or semistructured psychiatric interviews for axis I disorders. RESULTS: Seventy percent of the subjects reported at least one ataque de nervios; 80% of these were female, whereas 57% of the group without these attacks were female. There were no differences in DSM-III-R diagnoses between the groups with and without ataque de nervios. Ataque was frequently associated with one or more anxiety and affective disorders, including panic disorder, generalized anxiety disorder, recurrent major depression, and anxiety not otherwise specified. Of the 45 subjects with both ataque de nervios and primary panic disorder, 80% appeared to have labeled panic disorder as ataque. Ataque de nervios was associated with panic symptoms even in subjects without panic disorder, but the self-reporting of ataque conveyed additional clinical information about the subjects with panic disorder. Ataque de nervios was similar in frequency and symptoms among subjects of Dominican and Puerto Rican origin. CONCLUSIONS: Ataque de nervios overlaps with panic disorder but is a more inclusive construct. Further study of its interrelation with axis I disorders is needed.

Adult↗
PubMed1994

Childhood separation anxiety disorder in patients with adult anxiety disorders.

The authors examined the relation between retrospectively reported childhood separation anxiety disorder and adult DSM-III-R anxiety disorders in 252 outpatients at an anxiety disorders research clinic. The prevalence of childhood separation anxiety disorder was significantly greater among patients with two or more lifetime adult anxiety disorder diagnoses than it was among patients with only one anxiety disorder, suggesting that childhood separation anxiety disorder may be a risk factor for multiple anxiety syndromes in adulthood.

Adolescent↗
PubMed1994

The empirical basis of generalized anxiety disorder.

OBJECTIVE: The authors review the empirical data on generalized anxiety disorder, a diagnostic category that has been among the more conceptually challenging in psychiatric nosology. METHOD: Published studies and recent findings that were considered by the Generalized Anxiety Disorder Subcommittee of the DSM-IV Anxiety Disorders Work Group are reviewed. Among the issues examined are diagnostic reliability, comorbidity, boundaries with other disorders, and clinical features. RESULTS: A variety of data on the reliability and validity of generalized anxiety disorder have been produced. Some authors have suggested that generalized anxiety disorder is better conceptualized as a vulnerability that should be located on axis II, and others have recommended that the category be eliminated. Although the diagnostic reliability of generalized anxiety disorder is lower than that of other anxiety disorders, the features constituting the diagnostic criteria for generalized anxiety disorder have been found to be reliable. An important development has been the determination of a set of somatic symptoms associated with generalized anxiety disorder that differs substantially from those for other anxiety disorders. These findings led to reduction in the number of items in the symptom criterion, from 18 in DSM-III-R to six in DSM-IV. Another substantial revision is greater emphasis on the uncontrollability of worry. CONCLUSIONS: Whereas the data on construct and discriminant validity, age at onset, course, familial transmission, and response to treatment generally support the DSM-IV definition of generalized anxiety disorder, the construct continues to have weaknesses and further research is needed.

Adult↗
PubMed1994

Adinazolam sustained-release treatment of panic disorder: a double-blind study.

Two hundred six outpatients with panic disorder and agoraphobia were randomly assigned to receive 4 weeks of treatment with placebo or sustained-release adinazolam under double-blind conditions. Eighty-eight percent of patients receiving drug and 85% of patients receiving placebo remained in the study at week 4. This report describes the "intent-to-treat" analysis of 202 patients who made at least one follow-up visit after randomization at baseline. On the basis of the Clinical Global Impressions-Improvement Scale, 69.7% of the adinazolam-treated patients were much or very much improved compared with 39.6% of the placebo-treated patients at week 4 or end-point (p = 0.0001). At week 4, panic attacks were completely blocked in 57.1% of adinazolam-treated patients and in 39.2% of the placebo-treated patients (p = 0.009). Adinazolam sustained-release treatment was statistically more effective than placebo treatment on measures of global improvement, number of panic attacks, SCL-90 phobia severity, main phobia severity, and anticipatory and general anxiety. No drug-placebo differences were found for overall self-rated phobia severity, unexpected or situational panic attacks, or for work, family, or social disability.

Adult↗
PubMed1994

Social phobia: anxiety disorder comorbidity.

Research findings indicate significant comorbidity rates among the anxiety disorders, both between the various anxiety conditions and with other psychiatric and medical disorders. Although some other anxiety disorders have been widely investigated, social phobia was relatively unstudied before 1985. The authors review relevant epidemiological and clinical studies on comorbidity among the anxiety disorders, as well as on the relationship of social phobia with other anxiety disorders. They suggest that social phobia is a distinct diagnostic category and conclude that until a common methodological framework is established for obtaining reliable data, controlled comorbidity studies will not be fully beneficial.

Adolescent↗
PubMed1994

Functional impairment in social phobia.

BACKGROUND: This study examined the nature of impairment of functioning in persons with social phobia and assessed the validity of two new rating scales for describing impairment in social phobia. METHOD: In 32 patients with social phobia and 14 normal control subjects, impairment was assessed using the Disability Profile and the Liebowitz Self-Rated Disability Scale, new instruments designed to provide clinician- and patient-rated descriptive measures of current and lifetime functional impairment related to emotional problems. Validity of the new scales was assessed by measuring internal consistency, comparing scores for patients and controls, and comparing scores with those on standard measures of disability, social phobia symptoms, and social support. RESULTS: More than half of all social phobic patients reported at least moderate impairment at some time in their lives, due to social anxiety and avoidance, in areas of education, employment, family relationships, marriage/romantic relationships, friendships/social network, and other interests. Social phobic patients were rated more impaired than normal controls on nearly all items on both measures. Both scales were internally consistent, with Cronbach's alpha coefficients for lifetime and current disability subscales in the range of .87 to .92. Significant positive correlations of scores on the new scales with scores on coadministered standard scales of social phobia symptoms and disability demonstrated concurrent validity. Disability was not significantly correlated with measures of social support. CONCLUSION: Social phobia is associated with impairment in most areas of functioning, and the new scales appear useful in assessing functional impairment related to social phobia.

Activities of Daily Living↗