Clinician handoff
PTSD
Designed for a 60-second scan in primary care. Use this to explain why this theory fits, what would weaken it, and which tests are most worth discussing.
Why this still fits
My brain fog is happening in the context of trauma history. I want to understand how much of what I experience - hypervigilance, shutdown, difficulty concentrating - is PTSD physiology versus something else that needs ruling out, and what approaches have the strongest evidence.
What would weaken it
- -No trauma history, no trigger-linked worsening, and no dissociation or hypervigilance pattern around the fog.
- -The symptoms behave more like depression, sleep apnea, POTS, or another cause than trauma-state changes.
- -The nervous-system threat pattern is weak once the full story is reviewed.
Key points to communicate
- •I want to know whether this is PTSD-specific cognitive impairment or a nearby overlap from sleep, depression, or medication effects.
- •Please separate trauma-triggered shutdown from panic, dissociation, and ordinary stress overload.
- •If PTSD fits, I want to know which trauma-focused treatments are most likely to help the cognition too.
Bring this to the visit
- •A brief description of trauma type and when it occurred (detail not required).
- •Current symptoms: dissociation, hypervigilance, intrusive thoughts, nightmares.
- •Medication list including any psychotropics, sleep aids, or substances used to cope.
- •Sleep quality data since PTSD sleep disruption drives fog significantly.
Useful screening structure
- -PCL-5 (PTSD Checklist) as a structured severity measure.
- -PHQ-9 for co-occurring depression screening.
- -Dissociative Experiences Scale (DES) if dissociation is a prominent symptom.
Tests and measurements to discuss
PCL-5 (PTSD Checklist for DSM-5) - self-report screening
What this helps clarify: Patient-facing PTSD Checklist route used when trauma symptoms may be driving the cognitive picture.
Range context
0-80 score bands
How to use the result
Save the result with date and symptoms from the same week.
CAPS-5 (Clinician-Administered PTSD Scale) - if severe symptoms, requires trained clinician
Rule-out blood panel (TSH, cortisol, vitamin D, B12, ferritin, CBC)
What this helps clarify: Severe deficiency doubles dementia risk
Range context
40–60 ng/mL
How to use the result
Save the result with date and symptoms from the same week.
PHQ-9 + GAD-7 (comorbid depression and anxiety screening)
What this helps clarify: Depression screening - overlap with brain fog symptoms
Range context
Score <5
How to use the result
Save the result with date and symptoms from the same week.
Substance use screening (PTSD-substance comorbidity is high)
Questions to ask directly
- •Is the fog primarily from PTSD dissociation, sleep disruption, hypervigilance exhaustion, or medication?
- •Would trauma-focused therapy (EMDR, CPT) be expected to improve the cognitive symptoms?
- •Are there medical causes worth screening for in addition to PTSD (thyroid, anemia, sleep apnea)?
- •If medications are contributing to fog, are there cognitive-sparing alternatives?
Functional impact snapshot
- -Track fog severity against sleep quality, dissociation episodes, and hypervigilance levels.
- -Rate whether therapy sessions temporarily worsen or improve cognitive function.
- -Note which environments or triggers reliably worsen the fog - this guides avoidance and exposure planning.
Escalate instead of self-managing if
- •Suicidal ideation or self-harm - immediate safety assessment.
- •Severe dissociative episodes causing dangerous situations (driving, childcare).
- •Substance use escalation as a coping mechanism.
Peer-reviewed references