TMS uses magnetic pulses to stimulate brain regions involved in depression. It sounds like science fiction, but it's FDA-approved and covered by most insurance. Here's what you need to know.
How TMS Works
A magnetic coil placed against your scalp delivers focused pulses to the prefrontal cortex—a region underactive in depression. These pulses stimulate neurons and, over multiple sessions, help normalize brain activity.
- Non-invasive (no surgery, no anesthesia)
- Targets the left dorsolateral prefrontal cortex
- Stimulates neurons to fire
- Promotes neuroplasticity over time
- Effects build gradually with repeated sessions
Treatment Protocol
Standard TMS
- 36 sessions total
- 5 days/week for 6 weeks, then taper
- Each session: 20-40 minutes
- Done in outpatient clinic
- No sedation needed
Accelerated TMS (Stanford Protocol)
- 10 sessions per day for 5 days
- Treatment completed in one week
- Uses imaging-guided targeting
- Shows faster results in trials
- Not yet widely available
Effectiveness
For context, these are patients who've failed multiple medications—a population where any treatment struggles.
What Sessions Feel Like
- Tapping sensation on scalp
- Clicking sound from the coil
- Mild discomfort (usually improves over sessions)
- No cognitive effects—drive home after
- Can read, watch videos during treatment
Side Effects
- Scalp discomfort or pain (common, temporary)
- Headache (treatable with OTC meds)
- Facial twitching during treatment
- Seizure (very rare, ~0.01%)
Cost and Coverage
- $200-300 per session without insurance
- $6,000-15,000 for full course
- Most insurance covers after medication failures
- Prior authorization typically required
- Copays vary widely
Who's a Good Candidate
- Treatment-resistant depression (failed 1-2+ medications)
- Can't tolerate medication side effects
- Want to avoid/reduce medications
- No metal implants in head
- No seizure history
The Bottom Line
TMS is a legitimate option for treatment-resistant depression with a solid evidence base. It's well-tolerated, non-invasive, and covered by most insurance after medication failures. The main barrier is the time commitment—36 sessions is a lot. But for people who haven't responded to medications, it's worth considering.