Post-Traumatic Stress Disorder is not a character flaw, a sign of weakness, or something you can simply "push through." It is a diagnosable, treatable neurological condition that develops when the brain's natural trauma-processing system becomes overwhelmed and gets stuck in a loop it cannot exit on its own.
What Is PTSD?
PTSD can develop after experiencing or witnessing a traumatic event — or after prolonged exposure to trauma (as in childhood abuse, domestic violence, or occupational trauma like first responders or medical professionals). Not everyone who experiences trauma develops PTSD, and the factors that determine vulnerability are complex and multifactorial.
According to the DSM-5, a PTSD diagnosis requires symptoms from four specific clusters, present for more than one month and causing significant impairment in daily functioning.
The 4 PTSD Symptom Clusters
1. Re-Experiencing (Intrusion) Symptoms
These symptoms involve the traumatic event intruding involuntarily into present experience:
- Flashbacks — vivid, intrusive re-experiencing of the trauma as if it's happening now
- Nightmares about the traumatic event or trauma-related themes
- Intrusive memories — unwanted, distressing thoughts about the event
- Emotional flooding when exposed to trauma reminders (triggers)
- Physical reactivity to triggers — racing heart, sweating, nausea, trembling
2. Avoidance Symptoms
The mind and body naturally try to prevent re-experiencing by steering clear of trauma reminders:
- Avoiding thoughts or feelings related to the traumatic event
- Avoiding people, places, activities, or situations that trigger memories
- Emotional numbing or dissociation as a way to not feel
- Staying chronically busy to avoid internal space for memories to surface
While avoidance reduces short-term distress, it perpetuates PTSD long-term by preventing the natural processing of trauma memories.
3. Negative Alterations in Cognition and Mood
Trauma often fundamentally changes how people think and feel about themselves, others, and the world:
- Persistent negative beliefs: "I am broken," "I deserved it," "Nowhere is safe"
- Distorted blame — of self or others — for the traumatic event
- Persistent feelings of fear, horror, anger, guilt, or shame
- Diminished interest in once-enjoyable activities
- Feeling detached or estranged from others
- Persistent inability to experience positive emotions (emotional numbing)
4. Hyperarousal and Reactivity Symptoms
The nervous system remains stuck in a state of alert, as if danger is still present:
- Irritability or angry outbursts (often out of proportion to the trigger)
- Reckless or self-destructive behavior
- Hypervigilance — scanning the environment constantly for danger
- Exaggerated startle response
- Difficulty concentrating
- Sleep disturbances — difficulty falling or staying asleep
What Makes PTSD Different from Normal Stress Responses?
After a traumatic event, it's normal to experience distress, intrusive thoughts, and sleep disruption for days or even weeks. This is the nervous system doing its job — processing an overwhelming experience. For most people, these symptoms diminish naturally over time.
PTSD is diagnosed when symptoms persist beyond one month and significantly impair functioning in relationships, work, or daily life. Without treatment, PTSD symptoms often become more entrenched over time — not less — as avoidance behaviors develop and negative belief systems solidify.
Evidence-Based Treatments for PTSD
EMDR (Eye Movement Desensitization and Reprocessing)
Endorsed by the APA, WHO, and VA. EMDR uses bilateral stimulation to process traumatic memories without requiring extensive verbal detailing. Particularly effective for PTSD, with 77–90% of single-trauma cases achieving remission in 3–6 sessions.
Trauma-Focused CBT (TF-CBT)
Combines cognitive restructuring of trauma-based beliefs with gradual, supported exposure to trauma memories in a safe therapeutic environment. Strong evidence base for both adults and adolescents.
Somatic and Nervous System-Informed Approaches
Trauma is stored in the body, not just the mind. Somatic approaches work with breath, body sensation, and nervous system regulation — particularly helpful for complex trauma where clients struggle to access emotions verbally.
Holly Sullivan, LCSW
Holly Sullivan is a Licensed Clinical Social Worker and Certified Emotionally Focused Therapist at My Phoenix Therapist in Phoenix, AZ. With over two decades of clinical experience, she specializes in couples therapy, relationship issues, anxiety, depression, and life transitions. She is one of a relatively small number of EFT-certified therapists in Arizona and continues rigorous annual training. Holly sees clients in person at her North Phoenix office and via telehealth throughout Arizona.