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PTSD Secondary Conditions: What the VA Recognizes

The VA can service connect a condition that your service-connected PTSD caused or made worse (38 CFR 3.310). There is no official list of PTSD secondaries. Each one needs a current diagnosis and a medical opinion explaining the link. Common claims include sleep apnea, GERD, IBS, hypertension, erectile dysfunction, migraines and alcohol use disorder. Here is how each link is usually argued and what evidence it takes.

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TL;DR

A secondary condition is service connected if it is "proximately due to or the result of" a service-connected condition, or if a service-connected condition made it worse (38 CFR 3.310(a) and (b)).
You need three things: a current diagnosis, service-connected PTSD, and a medical opinion linking the two by causation or aggravation.
There is no presumptive list of PTSD secondaries. Every claim is decided on its own medical evidence, and none are automatic.
Obesity is not a disability by itself, but it can be an intermediate step between PTSD and a condition like sleep apnea (VAOPGCPREC 1-2017; Walsh v. Wilkie).
Alcohol or drug use disorder caused by PTSD can be compensated as secondary (Allen v. Principi).

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What is a secondary condition?

A secondary condition is a disability that came from, or got worse because of, a condition the VA already service connected. The rule is 38 CFR 3.310. Once a secondary condition is granted, the VA treats it as part of the original condition for service connection purposes, and it gets its own rating that combines with your others.

Secondary claims matter for PTSD because PTSD affects the whole body. Chronic stress, poor sleep, weight changes and medication side effects can all lead to physical conditions. Those conditions are not paid for under your mental health rating unless the VA grants them.

Causation vs. aggravation: what's the difference?

There are two ways to win a secondary claim, and your evidence should address both.

Causation (38 CFR 3.310(a)). PTSD, or treatment for it, caused the new condition.
Aggravation (38 CFR 3.310(b)). The condition may have its own cause, but PTSD made it worse beyond its natural progress.

The aggravation rule comes from Allen v. Brown, 7 Vet. App. 439 (1995) (en banc), and is now written into 3.310(b). On an aggravation grant, the VA pays only for the added disability. It sets a baseline level of severity from medical evidence, then subtracts that baseline and any natural progression from your current level (38 CFR 3.310(b)). Early medical records that show how the condition looked before it worsened help set a fair baseline.

A VA opinion that only answers "did PTSD cause this?" and skips "did PTSD make it worse?" is incomplete. That gap is a common reason to ask for a Higher-Level Review or file a supplemental claim with a new opinion.

What conditions are commonly claimed secondary to PTSD?

The table below lists common claims and the usual theory. It is not a VA list, and it does not mean any claim will be granted. The medical link has to be made by a qualified clinician who reviews your records.

Condition	Usual theory	Key evidence
Obstructive sleep apnea	Aggravation, or obesity as an intermediate step	Sleep study diagnosis, weight history, medical opinion addressing both causation and aggravation
GERD	Stress-related worsening, or side effects of PTSD medications	GI diagnosis, medication list and timeline, medical opinion
IBS	Stress and anxiety affecting the gut	GI diagnosis, symptom log, medical opinion
Hypertension	Aggravation by chronic stress, or medication effects	Blood pressure readings over time, diagnosis, medical opinion
Erectile dysfunction	Side effects of PTSD medications, or the psychological effects of PTSD	Diagnosis, medication history, medical opinion
Migraines	Aggravation by stress and poor sleep	Diagnosis, headache log, medical opinion
Alcohol or drug use disorder	Self-medicating PTSD symptoms	Diagnosis, treatment records, medical opinion on cause

Can sleep apnea be secondary to PTSD?

It can be, but it is one of the most contested secondary claims. It is not automatic, and there is no presumption. Most successful claims rely on a medical opinion that explains how PTSD aggravated the sleep apnea, or how PTSD led to weight gain that then led to or worsened the sleep apnea. A bare statement that "PTSD causes sleep apnea" without reasoning carries little weight.

The rating side matters too. Under the current 38 CFR 4.97, DC 6847, sleep apnea that requires a CPAP is rated 50%. The VA has proposed changes to those criteria that are not final as of September 2026. Details are on our VA rating for sleep apnea page.

How does obesity work as an intermediate step?

The VA's General Counsel held in VAOPGCPREC 1-2017 that obesity is not a disability on its own. It can, however, be an "intermediate step" between a service-connected condition and a secondary one. The adjudicator asks three questions:

Did the service-connected condition cause the weight gain that resulted in obesity?
Was the obesity a substantial factor in causing the claimed condition?
Would the claimed condition have occurred without the obesity caused by the service-connected condition?

In Walsh v. Wilkie, 32 Vet. App. 300 (2020), the Court of Appeals for Veterans Claims held that aggravation also applies here. If PTSD, or the medication used to treat it, aggravated your obesity, and that obesity led to a condition like sleep apnea, hypertension or knee problems, the VA must consider that theory when it is raised. A medical opinion should address each step with reasons.

Can alcohol use disorder be secondary to PTSD?

Yes. Federal law bars compensation for disability that results from a veteran's own willful misconduct or alcohol or drug abuse. The Federal Circuit carved out an important exception in Allen v. Principi, 237 F.3d 1368 (Fed. Cir. 2001). An alcohol or drug abuse disability can be compensated when it is secondary to, or a symptom of, a service-connected disability like PTSD.

The evidence must clearly show the substance use disorder came from the PTSD, not the other way around. Treatment notes that document drinking to sleep, to quiet nightmares or to cope with symptoms, along with a medical opinion, are the usual building blocks. Because alcohol use disorder is a mental condition, the VA often folds it into your single mental health rating instead of rating it separately. It can also be the link to physical conditions it causes, such as liver disease.

What about insomnia, anxiety or depression with PTSD?

These are usually not separate ratings. The mental health formula already includes chronic sleep impairment, anxiety and depressed mood (38 CFR 4.130). Rating the same symptoms twice is called pyramiding, and 38 CFR 4.14 prohibits it. If you have PTSD and depression, the VA will usually assign one mental health rating that accounts for both.

The better move is to make sure your single mental health rating reflects all of your symptoms. See our VA rating for PTSD guide.

What evidence does a PTSD secondary claim need?

Service-connected PTSD. The primary condition must already be service connected, or claimed at the same time.
A current diagnosis of the secondary condition from a medical provider.
A medical nexus opinion that addresses both causation and aggravation, uses the "at least as likely as not" standard, and explains its reasoning with reference to your records and medical literature.
Timeline evidence. When PTSD symptoms started, when the new condition appeared, weight changes, and medication start dates.
Your own statement describing how the conditions interact in your daily life.

The clinician writes the opinion independently after reviewing your records. Do not ask a doctor to sign a pre-written conclusion. An opinion is only as strong as its reasoning.

Our Secondary Conditions Map ($37) lays out common secondary links by primary condition, the theory usually argued, and the records to gather before you ask for a medical opinion.

Get the Secondary Conditions Map ($37)

How do secondary ratings affect my combined rating?

Each granted secondary condition gets its own rating that combines with your others under 38 CFR 4.25. VA math is not simple addition, so a new 10% or 30% can move you less or more than you expect. Run it through the VA disability calculator. For secondaries beyond PTSD, see our broader VA secondary conditions guide.

We are an Army Ranger and a combat engineer from a family full of veterans. We are not the VA, we are not VA-accredited, and we do not file claims for you. We explain the rules so you can build the strongest honest claim your evidence supports. No one can promise a rating.

Frequently asked questions

Is there an official VA list of PTSD secondary conditions?

No. Secondary service connection under 38 CFR 3.310 is decided case by case on medical evidence. Presumptive lists exist for toxic exposures and certain service, not for PTSD secondaries.

Can I file a secondary claim before PTSD is service connected?

You can file both at the same time. The secondary claim cannot be granted unless the PTSD claim is granted. Filing both together can help protect your effective date.

Does a medication side effect count as secondary?

It can. A condition that results from treatment of a service-connected disability can be service connected under 38 CFR 3.310(a). You still need a diagnosis and a medical opinion tying the condition to that medication.

Can erectile dysfunction secondary to PTSD lead to extra pay?

If service connected, ED is often rated 0%, but loss of use of a creative organ can qualify for special monthly compensation at the K level under 38 U.S.C. 1114(k). That is paid on top of your regular rate.

What if the VA exam only addressed causation?

An opinion that ignores aggravation when it was raised is inadequate. You can raise that error in a Higher-Level Review, or submit a new opinion that addresses aggravation with a Supplemental Claim.