What is PTSD?
Part of Trauma Types cluster.
Deeper dive: what is the difference between PTSD and C-PTSD
Short Answer
PTSD is a natural response to experiencing or witnessing life-threatening events. It develops when your nervous system cannot fully process the threat, leaving your alarm system stuck in activation.
What This Means
PTSD shows up as intrusive memories, nightmares, flashbacks where you relive the trauma. You avoid reminders. You feel detached, emotionally numb. You are hypervigilant—always scanning for danger. Sleep suffers. Concentration is impaired. You might feel irritable, angry, or startled easily. These are not character flaws. They are symptoms of a nervous system that experienced too much and has not been able to reset.
Why This Happens
During trauma, your brain encodes threat information differently than normal experience—without a timestamp, without context. The amygdala (threat detection) stays overactive. The hippocampus fails to consolidate memories properly. Your nervous system never gets the all-clear signal. So it stays ready, as if danger is still present. PTSD is not about being weak. It is about a nervous system doing exactly what it evolved to do—protect you from threat—when the threat has passed but your system does not know.
What Can Help
- PTSD is treatable: Effective treatments exist. You are not stuck with this.
- Trauma-focused therapy: EMDR, CPT, or PE are evidence-based specifically for PTSD.
- Medication can help: SSRIs and other medications can reduce symptoms.
- Build safety and routine: Predictability helps your nervous system calibrate.
- You are not broken: PTSD is an injury, not a defect. It can heal.
When to Seek Support
If you have PTSD symptoms for longer than a month after trauma, seek trauma-informed treatment. PTSD is highly treatable with appropriate therapy.
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Research References
Van der Kolk (2014), Porges (2011), Felitti et al (1998)
Robert Greene
Author, Founder, Navy Veteran