Accelerated iTBS for PTSD and Depression

The goal of this pilot clinical trial is to learn if a faster brain stimulation schedule is practical, safe, tolerable, and acceptable. This study looks at accelerated intermittent theta burst stimulation, or accelerated iTBS. This is a non-invasive type of magnetic brain stimulation. This study is for adults with post-traumatic stress disorder (PTSD) and major depressive disorder (MDD). The main questions this study aims to answer are: 1. Can participants complete six short brain stimulation sessions per day for five days? 2. Is this treatment schedule safe and tolerable for participants? 3. What changes occur in depression symptoms, PTSD symptoms, anxiety, quality of life, and brain activity over time? Participants will: 1. Complete health screening and baseline assessments. 2. Receive six short sessions of magnetic brain stimulation per day for five days. 3. Have their brain activity measured using an EEG recording. 4. Return for a post-treatment assessment at Week 2 and follow-up visits at Week 5 and Week 12.