Aggravation, Worsening and Material Contribution: The Second Door Into a DVA Claim

There are two entirely different ways a condition can be connected to your service, and most veterans only know about one of them.

The first is causation — service caused the condition. The second is aggravation — you already had the condition, and service made it permanently worse.

The second route is the one that gets abandoned early, usually because someone said "you had that before you joined" and the veteran accepted it. That is not how the law works. A condition you brought into service with you can still be accepted, and so can one that started during service but was not caused by it.

This article explains the difference, how the Statements of Principles are actually built around it, and what evidence each route needs.

The two routes, in the legislation

Under the MRCA, section 7 makes the point in one line: a service injury sustained or a service disease contracted includes an aggravation of that injury or disease by service. Aggravation is not a lesser category. It is part of the definition.

Section 27 then sets out the circumstances. An injury or disease is a service injury or service disease where it was:

sustained or contracted while rendering defence service but which did not arise out of that service, or sustained or contracted before a period of defence service; and
aggravated by defence service rendered after it was sustained or contracted, or contributed to in a material degree by defence service.

Two distinct concepts sit inside that. Aggravation is service making an existing condition worse. Material contribution is service contributing to a condition that has multiple causes. DVA's own guidance describes material contribution as a contribution that is more than trivial — service does not have to be the main cause, or even a large one.

The VEA runs a parallel scheme for those covered by it. The vocabulary differs slightly; the principle does not.

How the SoPs are built around this — the part nobody explains

Open any Statement of Principles and look carefully at the factor list. You will notice something: the same factors appear twice, in two blocks, with one word changed.

The first block is phrased around "the clinical onset" of the condition. The second is phrased around "the clinical worsening" of it.

Take thoracolumbar spondylosis. Factor (1) is "being a prisoner of war before the clinical onset of thoracolumbar spondylosis". Factor (19) is "being a prisoner of war before the clinical worsening of thoracolumbar spondylosis". Same circumstance, different limb of the claim.

Tinnitus does the same thing. There is a noise-exposure factor phrased around clinical onset, and the mirror factor phrased around clinical worsening — "being exposed to a peak sound pressure level at the tympanic membrane of at least 140 dB(C) before the clinical worsening of tinnitus".

Then, in most SoPs, there is a note that decides the whole question. In thoracolumbar spondylosis it reads:

"Aggravation-only factors: the factors in subsections 9(19) to 9(37) apply only to material contribution to, or aggravation of, the condition where it was suffered or contracted before or during (but did not arise out of) the person's relevant service."

That is the statutory architecture made concrete. The worsening factors exist specifically for veterans whose condition predates service, or arose during service without being caused by it. They are not a fallback. They are a purpose-built second door.

Clinical onset versus clinical worsening

These two terms carry the whole distinction, and both are defined in the SoP dictionary.

Clinical onset is when the condition first became clinically apparent — when symptoms or signs first appeared, or a doctor first identified it. Note it is not necessarily when it was diagnosed. A condition can have its clinical onset years before anyone puts a name to it.

Clinical worsening is a permanent deterioration beyond the condition's natural course. That last part matters enormously, and it is where most aggravation claims are lost.

The two tests aggravation actually has to pass

1. The worsening must be permanent, not temporary. A condition that flared during service and then settled back to where it was is not an aggravation. Your knee hurting more during a field exercise and recovering afterwards does not qualify. What qualifies is a step down that you never came back up from.

2. It must be worse than the natural history of the condition. Every degenerative condition worsens on its own. Osteoarthritis progresses. Spondylosis progresses. Hearing declines. The question is not "is it worse than it was" — time alone answers that. The question is "is it worse than it would have been without the service". That comparison is the heart of an aggravation claim, and it is a clinical judgement that has to be made and explained by a doctor.

Where aggravation claims come from

Four situations, all common:

You signed on with something. A knee injury from school football, childhood asthma, a back you had already hurt. It was recorded at your entry medical, or it was not, and either way you were accepted for service. Twenty years of load carriage later, it is a different problem entirely. That is aggravation, and the entry medical is your baseline.

It happened during service but not because of service. This is the situation section 27 was written for: the condition was sustained while you were a member but did not arise out of that service — a car accident on leave, an illness with no service connection. If subsequent service then made it worse, the aggravation limb is available.

Something else caused it, and service contributed. Material contribution. Service does not need to be the primary cause. Where the total exposure meets the SoP factor and the service-caused share is more than trivial, the claim can succeed.

An already-accepted condition has deteriorated. Not a new claim at all, but worth knowing: if an accepted condition worsens, that changes your permanent impairment assessment, and a reassessment may be warranted.

Why this route gets abandoned

Almost always for one of three reasons, and none of them is a good one.

"It was pre-existing, so I can't claim it." Wrong. Pre-existing is the precondition for an aggravation claim, not a bar to it. The aggravation-only factors exist for exactly these people.

"It's on my entry medical, so DVA already knows it wasn't service." The entry medical is the single most useful document an aggravation claim can have. It establishes the baseline — the state of the condition before service acted on it. Without a baseline, worsening is very hard to demonstrate. With one, it is straightforward.

"They rejected it once." A claim rejected on causation has not been decided on aggravation. Those are different tests against different factors. It is worth checking which limb the delegate actually considered before treating a rejection as final — and if only causation was addressed, that is a live issue on appeal.

What the evidence has to show

An aggravation claim needs three things a causation claim does not, and this is the practical heart of it.

A baseline. What was the condition like before the relevant service? Entry medicals, pre-service GP records, old imaging, school or sporting injury records. Anything that fixes the starting point.

Evidence of the worsening itself. Service medical records showing presentations, restrictions, downgrades, physiotherapy, changes in medication. A MEC downgrade is powerful evidence here — it is contemporaneous documentation that your capacity changed.

A clinical opinion on natural history. Someone has to say, in terms, that the deterioration exceeds what would have been expected without the service exposure, and explain why. This is the element most commonly missing, and the one a delegate cannot supply for themselves. It requires a doctor who has actually read the records and understands what the service involved.

That last point is the whole argument for a proper chart review before lodging. The baseline and the worsening are almost always sitting in the records already — the difficulty is that nobody has gone through and connected them.

How this interacts with presumptive liability

Presumptive liability, which commenced on 1 July 2026, removes the need to prove the link to service for listed conditions meeting the criteria. Most of those items are framed around onset occurring during a qualifying period of service.

So where a condition predates service, the presumptive route generally will not reach it, and the ordinary SoP process — including the aggravation factors — remains the way through. The two systems sit alongside each other; presumptive liability has not replaced the aggravation limb.

Frequently asked questions

Can I claim a condition I had before I joined?

Yes, if service permanently worsened it. That is what aggravation means, and the SoPs contain factors written specifically for conditions suffered or contracted before or during service that did not arise out of it.

What is the difference between aggravation and material contribution?

Aggravation is service making an existing condition worse. Material contribution is service being one of several causes of a condition. DVA treats a contribution as material if it is more than trivial — service need not be the main cause.

Does a temporary flare-up count?

No. The worsening has to be permanent. A condition that flared and then returned to its previous state is not an aggravation.

My arthritis was always going to get worse. Does that mean I cannot claim?

Not at all — but it means the question is sharper. The test is whether the deterioration exceeds the condition's natural course, not whether it deteriorated. That requires a clinical opinion comparing what happened with what would have been expected anyway.

What is "clinical onset"?

When the condition first became clinically apparent — first symptoms or signs, or when a doctor first identified it. It is not necessarily the date of diagnosis, which can come much later.

Is aggravation worth less than causation?

No. Once liability is accepted, it is accepted. The condition is then assessed for impairment and treatment in the same way regardless of which limb got it there.

DVA rejected my claim. Can I try the aggravation route?

Often yes. A decision made on causation has not necessarily considered aggravation, and they turn on different factors. It is worth reading the determination to see which limb was actually addressed.

Is my entry medical bad for my claim?

The opposite. It is the document that establishes your baseline, and a baseline is what an aggravation claim is built on.

Talk to us

If you have been told a condition is "pre-existing" and left it there, it is worth a second look. Call 0429 146 039 or email reception@vhc.org.au for a no-obligation consult with the Veterans Health Centre in Ipswich, Queensland.