Transcranial Magnetic Stimulation (TMS) is FDA-approved for treatment-resistant depression. TMS therapy for depression uses magnetic fields to stimulate brain regions involved in mood. Effective alternative when medications fail.
How TMS works
- Magnetic coil placed against scalp
- Stimulates dorsolateral prefrontal cortex
- Magnetic pulses penetrate skull
- Activates neural circuits
- No anesthesia or sedation
- Outpatient procedure
Standard protocol
- Daily sessions, 5 days/week
- 4-6 weeks total (20-30 sessions)
- Each session: 18-40 minutes
- Patient awake, can drive home
- Sometimes maintenance sessions
Who qualifies
FDA-approved indications:
- Major depressive disorder
- Failed at least one antidepressant trial
- Insurance often requires 2-4 medication failures
- Specific eligibility criteria
Effectiveness
- ~50-60% response rate in TRD
- ~30-40% remission rate
- Effects often last months
- Repeat courses possible if relapse
Side effects
Generally well-tolerated:
- Scalp discomfort during treatment
- Headache
- Brief facial twitching
- Rare seizure (less than 1 in 30,000)
- No memory effects (unlike ECT)
- No medication side effects
Newer protocols
SAINT (Stanford Accelerated Intelligent Neuromodulation Therapy):
- 10 sessions/day for 5 days
- Faster response
- FDA cleared as Stanford Neuromodulation Therapy (SNT)
Theta burst stimulation (TBS):
- Shorter sessions (3-10 minutes)
- Comparable effectiveness
Cost and insurance
- $300-500 per session
- Total course: $6,000-15,000
- Insurance covers when meeting criteria
- Out-of-pocket varies by plan
Frequently Asked Questions
Does TMS hurt?
Tapping sensation. Mild discomfort. Most patients tolerate easily.
How quickly does TMS work?
Most see effects 2-4 weeks into treatment.
Is TMS better than antidepressants?
Different. Used after antidepressants fail in TRD.
Can I drive after TMS?
Yes, no sedation.
Will my insurance cover TMS?
Usually yes for TRD with documentation. Pre-authorization required.
The bottom line on TMS
Effective FDA-approved treatment for TRD. Generally well-tolerated. Insurance covers with appropriate documentation. Worth considering for medication-resistant depression.