For a lot of families, this is the moment that’s confusing rather than relieving. The nightmares have eased. The startle response isn’t as sharp. PTSD treatment is working. But the flatness hasn’t lifted — the withdrawal, the “I don’t care anymore,” the sense that nothing reaches him the way it used to.
That’s usually not PTSD lingering in the background. It’s often a second condition running alongside it, one that needs its own treatment plan. PTSD and depression frequently occur together in veterans, and the overlap is common enough, and consequential enough, that it shapes how care should be structured from the start. This article covers how often the two appear together, why they’re connected, what the combination looks like day to day, and what treatment that addresses both can look like.
How Common Is PTSD and Depression Together in Veterans
Mental health surveys of the general veteran population put past-month PTSD at roughly 5% and lifetime major depressive disorder somewhat higher. The more clinically useful number is what happens to that 5% — how many of them also meet criteria for depression at the same time.
In a nationally representative sample of more than 2,700 U.S. veterans, researchers found that of those who screened positive for PTSD, more than a third also met criteria for current major depressive disorder (Nichter et al., 2020). Clinic-based samples of combat veterans have found comorbid depression rates well above 50% (Schnurr et al., 2014, as cited in PMC, 2021).
That gap between general-population numbers and treatment-seeking numbers matters. Most veterans who come through a clinic door for PTSD care are exactly the population where co-occurring depression is the expectation.
The pattern holds across multiple studies using different veteran samples, different eras of service, and different measurement tools. Depression shows up alongside PTSD often enough that a clinician evaluating one should always be screening for the other, and a family member noticing one set of symptoms shouldn’t assume the rest of the picture is settled.
Why PTSD and Depression Often Occur Together
PTSD and depression aren’t two unrelated conditions that happen to land on the same person by coincidence. They frequently share root causes. Deployment-related adversity, the severity of combat exposure, and the level of social support available after coming home all predict both PTSD and depression independently (PMC, 2021).
General harassment during service has also been linked to both PTSD and depression severity, including in female veterans specifically (PMC, 2021). The picture that emerges from this research isn’t “PTSD causes depression” in a simple chain. It’s that the same conditions that produce trauma responses — isolation, loss of unit cohesion, unresolved guilt, strained reintegration — also produce depressive symptoms, sometimes in the same person at the same time.
There’s also a timing question worth understanding. Depression doesn’t always follow PTSD in a clean sequence — it can appear before a traumatic event, alongside it, or well after the trauma response has already taken hold. A veteran might develop depression during a difficult deployment cycle, long before any single incident triggers PTSD. Another might function fine for years after coming home, then develop both conditions together when a major life change — a job loss, a divorce, retirement — strips away the structure that had been holding things steady. Neither pattern is more “real” than the other, and neither requires a single identifiable trigger to justify treatment.
Combat-Related PTSD Symptoms That Overlap With Depression
Part of what makes this comorbidity hard to spot is that the two conditions share enough surface symptoms that families — and sometimes veterans themselves — struggle to tell them apart.
What’s PTSD-Driven
Hypervigilance sits at the center of this: scanning a room for exits, not being able to sit with your back to a door, flinching at sudden noise. Intrusive memories and nightmares fall here too, along with active avoidance — skipping the places, conversations, or anniversaries that pull the memory back.
What’s Depression-Driven
Anhedonia is the clearest marker — the loss of interest in things that used to matter, from hobbies to relationships. Persistent low energy, a sense that nothing will improve, and a flattened emotional range that doesn’t track with any specific trigger point to depression rather than trauma alone.
Where the Two Blur Together
Sleep disruption, irritability, and pulling away from family show up in both conditions, which is exactly why a family member often can’t tell which one they’re watching. In our clinical practice, this is usually the moment a spouse reaches out — not because the PTSD symptoms got worse, but because something underneath them changed in a way that’s harder to name.
What This Looks Like for the People Around Him or Her
A spouse might describe it as “he’s not as on edge anymore, but he’s not really here either.” A parent might notice their adult child stopped flinching at loud noises months ago, but also stopped calling, stopped showing up to family dinners, stopped seeming like himself in any sense. Those are different problems with different solutions, and treating only the PTSD piece — even successfully — won’t touch the second one.
Treatment That Addresses PTSD and Depression
PTSD-focused work is doing exactly what it’s supposed to do — the depression underneath it just never got named as its own target. In our clinical practice, this is one of the more common reasons progress feels incomplete.
What addressing both usually looks like:
- Trauma-focused therapy paired with direct treatment for depression
- A structured course of therapy aimed at depressive symptoms specifically
- Medication management, alone or alongside therapy
- The right combination depends on severity and treatment history
Why sequencing matters:
- Some veterans need PTSD symptoms stabilized first — it’s hard to do cognitive work on hopelessness while still being ambushed by flashbacks
- Others need depression treated first — flatness and low motivation can make trauma-focused work nearly impossible until mood lifts
- A clinician screening for both conditions from the first appointment is better positioned to make that call than one working from a single diagnosis
For veterans whose depression hasn’t responded after multiple treatment attempts, Transcranial Magnetic Stimulation is worth a conversation with a provider — we’ve covered that ground in more depth in our treatment-resistant depression content, since it deserves its own explanation rather than a quick mention here.
The Bottom Line
PTSD and depression in veterans aren’t two separate boxes to check off one at a time. They reinforce each other, they share root causes, and treating only one while the other goes unnamed leaves real risk on the table — for mood, for physical health, and in the more serious cases, for safety.
If you’re noticing this pattern in your own life or in someone you care about, a clinical evaluation that looks at both conditions together is the place to start. ITS offers a free Consultation to help figure out what kind of care fits your situation — no obligation, just a conversation about where to go from here.
Clinical Disclaimer: This article is for informational purposes only and does not constitute medical or psychological advice, diagnosis, or treatment. It is not a substitute for an evaluation by a licensed mental health or medical professional. If you or someone you know is having thoughts of suicide or self-harm, contact the Veterans Crisis Line by calling 988 and pressing 1, or text 838255.
