Service-connected PTSD is one of the biggest gateways to secondary conditions in the whole system. Once PTSD is service-connected, conditions it caused or aggravated can be service-connected too under 38 CFR 3.310 — commonly sleep apnea, GERD, migraines, hypertension, and more. None of them are automatic: each needs its own diagnosis and a medical nexus back to the PTSD.
Straight talk first
Here's the thing most veterans with a PTSD rating never act on: PTSD doesn't sit still. It disrupts sleep, hammers the gut, drives blood pressure, fuels headaches, and reaches into nearly every system in the body. VA recognizes that — but only if you claim the downstream conditions and prove the link. I've watched guys carry a PTSD rating for years while the conditions it caused went unclaimed, which is points and dollars left on the table.
This is the PTSD-as-primary cut of the framework on VA secondary conditions.
Conditions commonly claimed secondary to PTSD
Each of these is a starting point to investigate with a provider, not a guaranteed grant:
- Sleep apnea — the most-discussed PTSD secondary.
- GERD / gastrointestinal conditions — gut symptoms tied to chronic stress and to psychiatric medications.
- Migraines / headaches.
- Hypertension — commonly pursued, though the medical link is debated, so the nexus opinion matters even more.
- Erectile dysfunction — often tied to PTSD itself or to its medications.
- Substance use / additional mental health conditions.
Run your service-connected condition through the Secondary Conditions Finder to see the common chains and a nexus-strength read.
The other direction: PTSD (or depression) as the secondary
It also works in reverse. A mental health condition can be secondary to a physical service-connected condition — classically, depression or anxiety secondary to chronic service-connected pain (see depression & anxiety as secondary conditions). If your mental health declined because of a rated physical condition, that's a 3.310 path too.
What you have to prove (38 CFR 3.310)
- A current diagnosis of the secondary condition.
- Service-connected PTSD as the primary.
- A medical nexus — an opinion that PTSD "at least as likely as not" caused or aggravated the secondary.
A higher PTSD rating does not shortcut any of this. The rating measures the PTSD's severity; the secondary is its own claim with its own evidence. The mechanics of building it are in how to file your own claim.
What it does to your combined rating
Each secondary gets its own rating that then combines with your PTSD using VA math — it doesn't simply add. Because PTSD often sits at a high percentage already, a new secondary can behave differently than you'd expect; run it through the VA Combined Rating Calculator to see the real movement, and if your ratings are high but you can't work, read about TDIU.
Key takeaways
- PTSD is a gateway primary — many conditions can be claimed as caused or aggravated by it.
- Common secondaries include sleep apnea, GERD, migraines, hypertension, and ED — none automatic.
- It runs both ways: mental health can also be secondary to a physical service-connected condition.
- Every secondary needs a diagnosis and a nexus (38 CFR 3.310) and combines into your total.
Frequently asked questions
- What conditions can be secondary to PTSD?
- Veterans commonly pursue sleep apnea, GERD or other GI issues, migraines, hypertension, and erectile dysfunction as secondary to service-connected PTSD, among others. Each needs a current diagnosis and a medical nexus to the PTSD — there's no automatic list of grants.
- Does a higher PTSD rating make secondaries automatic?
- No. Your PTSD rating reflects the severity of the PTSD itself; it doesn't auto-grant anything else. A secondary is its own claim — current diagnosis, the service-connected PTSD as the primary, and a medical opinion linking them under 38 CFR 3.310.
- Can PTSD itself be a secondary condition?
- Yes. Mental health conditions, including PTSD or depression, can be claimed as secondary to a physical service-connected condition — for example, depression secondary to chronic service-connected pain. The same nexus requirement applies.
- Will secondaries raise my combined rating?
- They can. Each newly service-connected secondary gets its own rating that then combines with your PTSD and other ratings using VA math. Whether it raises your overall number depends on where each lands.
Sources
- 38 CFR 3.310 — secondary service connection (caused or aggravated): https://www.ecfr.gov/current/title-38/chapter-I/part-3/subpart-A/section-3.310
- VA — PTSD and VA disability compensation: https://www.va.gov/disability/eligibility/ptsd/
- VA — how VA decides service connection: https://www.va.gov/disability/eligibility/
