Oxytocin Administration in BDD and OCD

Despite the development of efficacious pharmacologic and psychological treatments body
dysmorphic disorder (BDD), treatment outcome data suggest that there is still considerable
room for improvement. A closer examination of biological mechanisms underlying
psychopathology may help uncover mechanisms to target during intervention and thereby provide
a novel approach to treatment. Given that the neuropeptide, oxytocin, is involved in the
regulation of a variety of social and cognitive dimensions, including emotion recognition and
social attentional processing, there are direct implications regarding its role in the
development of such deficits among individuals with BDD. The current study therefore aims to
investigate the effect of oxytocin administration on social cognitive impairments in BDD and
a related disorder, OCD. Twenty treatment-seeking male and female outpatients with BDD, 20
individuals with OCD, and 20 healthy participants will be assigned to receive an oxytocin and
placebo nasal spray one week apart. During each visit, subjects will complete a series of
tasks to measure emotion recognition, attentional biases, interpretive biases, and trust
behavior. Importantly, these findings may show that a single administration of oxytocin may
alter social cognitive processes thought to maintain BDD, and ultimately inform treatments
for BDD.

Inclusion Criteria:

- Treatment-seeking adult males and females ≥ 18 years of age

- Meets DSM-IV criteria for principal BDD (for BDD group) or principal OCD (for OCD
group), as determined by Structured Clinical Interview for DSM-IV (SCID) diagnostic
interview

- For females only: must be taking low-dose oral contraceptive pills, as defined by
monophasic pills containing <50 mcg ethinyl estradiol

- For healthy volunteers only: does not meet current DSM-IV diagnosis of any Axis I
disorder

Exclusion Criteria:

- Participants in the BDD group will be excluded if they have a comorbid diagnosis of
OCD and participants in the OCD group will be excluded if they have a comorbid
diagnosis of BDD.

- Current diagnosis of schizophrenia, psychotic disorder, bipolar disorder, substance
abuse or substance dependence. All other Axis I comorbidities will be permitted to
foster the accrual of a clinically relevant sample.

- Significant nasal pathology (e.g., atrophic rhinitis, history of hypophysectomy,
recurrent nosebleeds)

- Smokers who smoke ≥ 15 cigarettes daily

- Serious medical illnesses

- Active homicidal or suicidal ideation

- Concurrent use of psychotropic medications

- Steroid or hormone use (except low-dose oral contraceptive pills for females, which is
allowed)

- For females only: positive urine pregnancy test and use of high dose
estrogen/progestin pills (low dose estrogen/progestin oral contraceptives will be
allowed due to stability of hormone levels during active phase)

- For healthy volunteers only: any current DSM-IV Axis I disorder