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Put any two — or three — conditions side by side, adult or pediatric, to spot the look-alike differences fast, row by row.

Post-Traumatic Stress Disorder

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In one line

·After a terrifying event: unwanted memories that feel real, avoiding anything that reminds you of it, dark moods, and being on high alert for more than a month.

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Normal physiology

·A healthy brain keeps fear in check by balancing two main systems: the amygdala (the alarm center deep in the brain that flags danger) and the prefrontal cortex (the front part of the brain that weighs whether the alarm is real and tells the amygdala to calm down). When something scary happens, the amygdala fires, your body floods with adrenaline (a hormone that powers the fight-or-flight response), and after the danger passes, the prefrontal cortex steps in to say 'it is over, stand down.' The memory gets stored as a past event, not a current threat.

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What goes wrong

·In PTSD, the trauma is so overwhelming that the prefrontal cortex cannot do its job in the moment. The amygdala stays locked in alarm mode, the hippocampus fails to time-stamp the memory as 'over,' and the trauma gets stored as if it is still happening. Every reminder reactivates the same fear circuit, so the memory feels real instead of past. Chronic stress also shrinks parts of the prefrontal cortex and hippocampus over time, making it even harder to calm the alarm or sort past from present.

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Hallmark signs

·Intrusive memories or nightmares of the trauma
·Avoiding reminders of the trauma (people, places, conversations, or thoughts)
·Feeling constantly on edge or jumpy (hyperarousal)
·Trouble sleeping or staying asleep
·Feeling numb, detached, or cut off from others
·Negative thoughts about yourself or the world ('I'm broken,' 'nowhere is safe')
·Sudden anger or irritability
·Thoughts of harming yourself or ending your life

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Red flags · escalate now

·Thoughts of suicide or a plan to harm yourself
·Harming yourself or taking dangerous risks on purpose
·Hearing voices or seeing things that aren't there (psychosis)
·Unable to care for yourself (not eating, drinking, or leaving bed for days)
·Severe panic attacks that feel like a heart attack or make you pass out

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Workup

·PTSD Checklist for DSM-5 (PCL-5)
·Clinician-Administered PTSD Scale (CAPS-5)
·Patient Health Questionnaire-9 (PHQ-9)
·Generalized Anxiety Disorder-7 (GAD-7)
·Urine drug screen
·Thyroid-stimulating hormone (TSH)

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Treatment

·Trauma-focused cognitive behavioral therapy (CBT) or Eye Movement Desensitization and Reprocessing (EMDR) for 12 to 16 weekly sessions
·Sertraline 50 to 200 mg daily or paroxetine 20 to 60 mg daily (the two SSRIs approved by the FDA for Post-Traumatic Stress Disorder)
·Prazosin 1 to 20 mg at bedtime for nightmares
·Fix housing, ensure a steady safe place to sleep, connect to substance use treatment if needed, and schedule therapy at the same time each week
·Avoid benzodiazepines (like lorazepam, clonazepam, or alprazolam); do not prescribe them for Post-Traumatic Stress Disorder

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NCLEX trap

·Do NOT use benzodiazepines for Post-Traumatic Stress Disorder. They make the condition worse and build dependence. Use sertraline or paroxetine (SSRIs—medicines that lift the brain's serotonin, a messenger that steadies mood) instead, plus trauma-focused therapy.
·Post-Traumatic Stress Disorder is a brain circuit disorder. The amygdala (the brain's alarm center) stays switched on, and the prefrontal cortex (the front of the brain that pumps the brakes on big feelings) cannot turn it off. It requires professional trauma-focused therapy (CBT, EMDR, or prolonged exposure) and often medication. Ignoring it does not help.
·Sleep in Post-Traumatic Stress Disorder improves when the fear circuit turns down. Prazosin (a medicine that blocks adrenaline surges during nightmares) or therapy works better than sedatives. Treat the circuit, not just the symptom.
·Post-Traumatic Stress Disorder happens after ANY severe trauma at ANY age: war, car crashes, assault, natural disasters, sudden loss. Age does not protect the brain circuit. The amygdala responds to life threat no matter how old you are.
·Post-Traumatic Stress Disorder and alcohol use disorder amplify each other. Alcohol numbs the fear temporarily but keeps the amygdala stuck in high alert. Treat BOTH at the same time with one coordinated plan (trauma therapy plus addiction counseling plus medication), or the person stays sick.
·Post-Traumatic Stress Disorder requires repeated, structured therapy sessions (CBT, EMDR, or prolonged exposure over 8 to 16 weeks) plus medication, plus social support. One session is a start, not a cure. The brain circuit needs time and practice to rewire.

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