Accelerated TMS for MDD

This study is evaluating an accelerated form of TMS (transcranial magnetic stimulation — a non-invasive brain stimulation treatment) for people with major depression. The accelerated approach delivers more sessions over a shorter time period than standard TMS. **You may be eligible if...** - You are 15 years old or older - You have been diagnosed with major depressive disorder and are currently in a depressive episode - Your doctor has already prescribed TMS therapy for you - You are on a stable treatment plan (medication, therapy, or other) for at least the past 4 weeks - Adults must have tried at least one antidepressant medication without adequate response (not required for adolescents) **You may NOT be eligible if...** - Your doctor has not prescribed TMS for you - You have conditions that make brain stimulation unsafe (such as metal implants in your head) Talk to your doctor to see if this trial is right for you.