Secondary service connection
Hypertension Secondary to PTSD
If VA already rates you for PTSD, hypertension can be claimed as secondary under 38 CFR § 3.310 — you do not have to prove it started in service.
Already rated
PTSD
Service-connected
The claim
Hypertension
Secondary · 38 CFR § 3.310
What the claim needs on paper
- A current diagnosis: Hypertension
- Your service-connected PTSD
- A medical opinion linking the two — “at least as likely as not”
The short answer
Hypertension secondary to PTSD: can you claim it?
Hypertension can be claimed as secondary to service-connected PTSD under 38 C.F.R. § 3.310, and the nexus letter has to explain, at the "at least as likely as not" standard, how PTSD caused your high blood pressure or made it worse. Because VA examiners often reject a general statement of the link, the letters that hold up tie it to your records: blood pressure that rose after PTSD began, readings that climb with PTSD flare-ups, or a medication or sleep problem with a documented effect on blood pressure.
How this secondary claim works
The medical link
PTSD dysregulates the autonomic nervous system and elevates cortisol, causing sustained increases in blood pressure over time.
What proves it
Blood pressure readings across multiple visits; cardiology or primary care nexus letter connecting chronic stress response to hypertension diagnosis.
The rule VA applies
38 CFR § 3.310 covers secondary service connection two ways: a condition caused by a service-connected disability, and one aggravated by it beyond its natural progression. Either route works, and a claim can argue both. The standard is “at least as likely as not” — a 50% probability, not proof beyond doubt.
You do not need to show hypertension began during service. That is what makes a secondary claim different, and it is the step most veterans do not realise is available to them.
How strong is this claim?
Research links PTSD with a higher risk of high blood pressure, but whether PTSD itself causes it is still debated, and VA examiners frequently answer no, pointing to age, weight, and family history. That makes this a theory the evidence has to carry. It is stronger when the timeline is clean (normal pressures before PTSD, rising pressures after), when aggravation is argued in the alternative, and when a concrete link shows up in the chart, such as a psychiatric medication known to raise blood pressure. Check the easier routes first: with qualifying Agent Orange exposure, hypertension is presumptive under the PACT Act and needs no opinion, and if you have service-connected sleep apnea, that pairing has a more direct physiological mechanism.
How VA rates hypertension
Hypertension is rated on its own under 38 C.F.R. § 4.104, DC 7101, separately from PTSD: 10% for diastolic predominantly 100 or more, systolic predominantly 160 or more, or as a minimum when you need continuous medication and have a history of diastolic readings predominantly 100 or more; 20% for diastolic 110 or more or systolic 200 or more; 40% for diastolic 120 or more; 60% for diastolic 130 or more.
What the nexus letter for hypertension secondary to PTSD must cover
- 1
Hypertension, confirmed the way VA defines it
Readings taken two or more times on at least three different days, with diastolic pressure predominantly 90 or higher (DC 7101, Note (1)). The opinion should cite where those readings are.
- 2
The timeline
When PTSD symptoms began and were diagnosed, and when blood pressure first rose or medication started. Pressures that climb after PTSD support causation; pressures that came first point to aggravation.
- 3
A mechanism, in your chart
Chronic activation of the stress response, sleep disruption from nightmares, a psychiatric medication with a known blood-pressure effect, or alcohol use tied to PTSD. Name the ones your records support and explain each on its own.
- 4
Aggravation, in the alternative
If the hypertension could have developed anyway, how PTSD made it worse beyond its natural course: more medications, higher readings, or harder control during PTSD flares.
- 5
Age, weight and family history addressed
These are the first alternatives an examiner cites. A strong opinion names the ones in your file and explains why PTSD still caused or worsened the hypertension.
- 6
The right author
Blood pressure is a physical-medicine question, so an internist, cardiologist, or your primary care provider is a natural author; your psychiatrist or psychologist can speak to the course of the PTSD and its medications.
Example nexus letter wording: hypertension secondary to PTSD
The opinion section of a nexus letter for hypertension secondary to PTSD, for an invented veteran. A real letter is written by the clinician about your records, and the facts in it have to be yours.
Sample — Illustrative Specimen
Invented veteran · not a real medical opinion · do not copy as your own
Opinion: It is my medical opinion that the veteran's hypertension is at least as likely as not (a 50 percent or greater probability) proximately due to his service-connected post-traumatic stress disorder. In the alternative, it is at least as likely as not that the PTSD has aggravated his hypertension beyond its natural progression.
Records reviewed: VA mental health records 2014 to 2026; primary care records including blood pressure readings from 2010 forward; the pharmacy history; and the rating decision service-connecting PTSD.
History: Blood pressure readings were normal through 2014. PTSD was diagnosed in 2015. From 2016, diastolic readings of 94 to 102 are recorded on repeated visits on more than three separate days, and amlodipine was started in 2017. The highest readings in the record fall in 2019 and 2023, the two periods his psychiatrist documented worsening nightmares, hypervigilance, and poor sleep.
Rationale: PTSD involves sustained activation of the sympathetic nervous system and the stress-hormone response, which raise heart rate and vascular resistance, and chronic sleep disruption adds to that effect. The record here shows normal pressures before PTSD, sustained elevation after it, and the worst readings during documented PTSD flares. I considered age, weight, and family history: he was 34 when readings rose, his weight changed by less than eight pounds over the period, and no family history of hypertension is recorded.
What this becomes
Build the documents for this claim
Tell us what's going on in your own words and we'll draft the nexus letter for your provider to review and sign, plus your personal statement and buddy statements.
Obstructive sleep apnea DC 6847
This claim needs: a nexus opinion.
- 1 · The diagnosisOn record — the VA already conceded it
- 2 · What happened, and how it affects youYour statement · daily life · a witness
- 3 · The link to your serviceReady to draft — this answers the denialDraft it →
How VA rates it — your records document the 50% level.
“Patient uses CPAP nightly, compliance 92% of nights.” — sleep study, p. 3
A demo claim, not a customer's — every claim is laid out this way. VA decides every claim.
Straight answers
Common questions
- Can hypertension be secondary to PTSD?
- It can be claimed that way under 38 C.F.R. § 3.310. The opinion has to explain how PTSD caused or worsened your high blood pressure, with the timeline and readings from your records, because VA examiners often reject the general link. VA decides whether the evidence is enough.
- What should a nexus letter for hypertension secondary to PTSD say?
- It should confirm hypertension by VA's definition, name the service-connected PTSD, state the opinion as "at least as likely as not," explain the mechanism with facts from your chart (the timeline, flare-ups, medications, sleep), argue aggravation in the alternative, and address age, weight, and family history.
- Is hypertension rated separately from PTSD?
- Yes. It is a separate rating under DC 7101, based on your blood pressure readings, and it combines with the PTSD rating using VA's combined-rating math.
- Should I claim hypertension under Agent Orange instead?
- If you have qualifying herbicide exposure, yes. The PACT Act made hypertension presumptive for Agent Orange exposure in 2022, so no nexus opinion is needed on that route.
- Can Hypertension be service-connected as secondary to PTSD?
- It can be claimed that way. Under 38 CFR § 3.310, a condition that is proximately due to — or aggravated by — an already service-connected disability can itself be service-connected. Whether VA grants it depends on the evidence in your file, and the decision is made solely by VA adjudicators.
- What is the medical link between PTSD and Hypertension?
- PTSD dysregulates the autonomic nervous system and elevates cortisol, causing sustained increases in blood pressure over time.
- What evidence do I need?
- Blood pressure readings across multiple visits; cardiology or primary care nexus letter connecting chronic stress response to hypertension diagnosis.
- Do I need a nexus letter for a secondary claim?
- In most cases yes. The rater needs a medical opinion connecting the two conditions at the "at least as likely as not" (50% or greater) standard. That opinion has to come from a licensed clinician who reviews your records and signs it — a draft is a starting point for that provider, not a substitute for their judgment.
Keep going
Other conditions secondary to PTSD
Veterans rated for PTSD often have more than one of these.
Rated for more than PTSD?
Pick what you're rated for → see what commonly follows.
The free finder maps the secondary conditions that commonly follow every condition you already have — not just this one. No sign-up to look.
Start with the records you have.
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This page explains how a secondary claim works. It is not medical or legal advice, and it is not a prediction about your claim — service connection and any rating are decided solely by VA adjudicators. VA Claim Commander is not affiliated with the U.S. Department of Veterans Affairs.