OBJECTIVES: I. Determine whether the prevalence of abnormalities on clinical vestibular (balance) tests is higher in panic disorder with agoraphobia than in uncomplicated panic disorder and nonpanic anxiety disorder. II. Determine whether the prevalence of abnormalities on audiological tests of cochlear or brainstem function is elevated in panic disorder without agoraphobia or nonpanic anxiety disorder. III. Determine whether symptom patterns can be identified that are indicative of vestibular abnormalities in panic disorder. IV. Determine whether vestibular dysfunction can be induced by psychosomatic mechanisms.

Condition	Treatment or Intervention
Anxiety Disorder Panic Disorder	Procedure: Clinical vestibular tests

Further Study Details: 

Expected Total Enrollment:  165

PROTOCOL OUTLINE: Patients are stratified by otoneurological function (panic disorder without agoraphobia, panic disorder with agoraphobia, anxiety disorder without panic or agoraphobia-like avoidance, and normal controls). Patients undergo a psychiatric interview and a structured interview focused on anxiety disorders. Physical evaluation is completed. A vestibular evaluation consisting of posturography, rotational testing, and ocular motor screening battery, and positional and caloric testing is completed on all patients. Patients then complete an audiological test battery consisting of basic audiological analysis, speech recognition scores, immittance testing, brainstem evoked response, and determination of binaural masking level differences. Control patients also complete a hyperventilation-rotational test.

Ages Eligible for Study:  18 Years   -   55 Years,  Genders Eligible for Study:  Both

Accepts Healthy Volunteers

Criteria

PROTOCOL ENTRY CRITERIA: --Disease Characteristics-- Diagnostically proven panic disorders with or without moderate or severe agoraphobia and anxiety disorders without panic or agoraphobia Panic disorder may be accompanied by a secondary Axis 1 diagnosis of another disorder, such as depression, generalized anxiety disorder, or dependent, histrionic, or compulsive personality disorder --Prior/Concurrent Therapy-- Surgery: No prior ear surgery Other: No concurrent medication for medical or psychiatric conditions At least 2 weeks since prior medication No ototoxic drug intake --Patient Characteristics-- No medical disorders At least 2 weeks since prior upper respiratory tract infection and recovered No history of migraine No head trauma No scoliosis No alcoholism No drug abuse No family history of schizophrenia

Pennsylvania
      University of Pittsburgh, Pittsburgh,  Pennsylvania,  15260,  United States

Study chairs or principal investigators

Rolf G. Jacob,  Study Chair,  University of Pittsburgh   

Study ID Numbers:  199/11945; UPITTS-9504279605
Record last reviewed:  December 2003
Last Updated:  October 13, 2004
Record first received:  October 18, 1999
ClinicalTrials.gov Identifier:  NCT00004367
Health Authority: United States: Federal Government
ClinicalTrials.gov processed this record on 2005-04-08