Transcranial Magnetic Stimulation (TMS) in the Treatment of Anorexia Nervosa
Anorexia Nervosa
About this trial
This is an interventional treatment trial for Anorexia Nervosa
Eligibility Criteria
Inclusion Criteria:
- Females ages 18 to 45 years
- Diagnostic criteria. Current diagnosis of AN according to the DSM V, including having a severe fear of weight gain and body image distortion
- Restricting or binge/purge subtype
- English is primary language spoken
Exclusion Criteria:
- Subjects who are pregnant or think they may be pregnant will be excluded from the study.
- Subjects will not have electrolyte, blood count or kidney or liver function abnormalities. Prior to starting the TMS treatment (Visit 2), all subjects will complete a basic metabolic panel (must be completed within no more than one week prior to the start of the TMS treatment) to rule out electrolyte or metabolic abnormalities.
- Subjects may not have a lifetime history of a condition likely to be associated with increased intracranial pressure, space occupying brain lesion, any history of seizure except those therapeutically induced by ECT or a febrile seizure of infancy or single seizure related to a known drug related event.
- Subjects may not have a history of significant head trauma with loss of consciousness for greater than 5 minutes.
- Subjects may not have an intracranial implant (e.g., aneurysm clips, shunts, stimulators, cochlear implants, or electrodes) or any other metal object within or near the head, excluding the mouth, that cannot be safely removed.
- Subjects may not currently take more than lorazepam 2 mg daily (or equivalent) or any dose of an anticonvulsant due to the potential to limit TMS efficacy or have a history of lack of response to accelerated course of iTBS or rTMS in the past.
- Subjects may not have a concomitant major unstable medical illness, cardiac pacemaker or implanted medication pump.
- Subjects may not have symptoms of alcohol or substance abuse or dependence in the past month, may not have previous or current organic brain syndromes, psychotic disorders, bipolar type disorders, somatization disorders, or conversion disorder.
- Antidepressant bupropion or other seizure threshold lowering medication or are currently taking tricyclic antidepressants or neuroleptics.
- Permanent eye makeup (such as eyeliner or eyebrows) or other face tattoos due to potential ferrous materials used in the tattoo ink
- Subjects may not have a history of neurocardiogenic syncope as there is an increased risk of TMS-induced neurocardiogenic syncope in adolescent populations.
- Subjects may not have implanted neurostimulators, intracardiac lines, or heart disease that causes moderate to severe symptoms and/or is characterized by moderate to severe pathology (including a recent history of myocardial infarction and heart failure with an ejection fraction of less than 30% or with a New York Heart Association Functional Classification of Class III or IV).
- Subjects may not have a history of stroke or other brain lesions.
- Subjects may not have a history of suicide attempt(s).
- Subject may not have a family history of epilepsy.
- Cannot refrain from drinking alcohol for the duration of the study. Subjects will be asked to refrain from consuming alcohol for the duration of the study. At the beginning of each treatment day subjects will be asked about alcohol consumption in the last 48 hours and will not complete the treatment sessions that day if they have had alcohol in the last 48 hours.
Sites / Locations
- University of California San DiegoRecruiting
Arms of the Study
Arm 1
Arm 2
Experimental
Sham Comparator
Active iTBS
Sham iTBS
rTMS treatments will employ the Brainsway stimulator (Brainsway Ltd, Israel). Prior to the first treatment (no more than 5 days prior), each subject's motor threshold (MT) will first be determined according to published methods (Schutter, van Honk, 2006; Julkunen et al, 2009). This location, as well as the stimulation target spot, will be marked at the first session on the scalp and standard methods will be used to target this spot during treatment sessions. The modified BeamF3 scalp heuristic will be used to localize the treatment site over the left DLPFC (Mir-Moghtadaei et al., 2015). Subjects will complete 5 treatments days. A treatment day will consist of 10 treatment sessions with the start of each session timed to be at least 50 minutes from the previous session.
The BrainsWay Model 104 with H4 coil has an integrated sham coil. The sham condition will start with the same clicking noise as the active TMS condition. Every helmet has a corresponding sham H-coil encased in the same helmet. The sham coil induces only a negligible sub-threshold field in the brain while making an identical noise and inducing some scalp sensation. Subjects will complete 5 treatments days. A treatment day will consist of 10 treatment sessions with the start of each session timed to be at least 50 minutes from the previous session. Subjects in this arm will have the option of receiving the Active iTBS protocol after they complete the 5 days of 10 daily treatment sessions.