Statement of Principles concerning tension-type headache (Reasonable Hypothesis) (No. 37 of 2018)

Tension-type headache is defined in section 7(2) with a composite set of criteria: minimum headache frequency (at least 10 episodes per 12 months, each 30+ minutes, occurring at least monthly for three consecutive months); two out of four characteristics (bilateral, pressing/tightening nonpulsating, mild or moderate intensity, not aggravated by routine physical activity); and clinically significant distress or functional impairment. The definition captures chronic and episodic forms only through the frequency threshold (contrast with the separate definition of "chronic tension-type headache" in the dictionary, which requires at least 15 days per month for more than three months). The definition strictly excludes other primary headache disorders and secondary headaches, narrowing the scope of compensable conditions.

Relevant service is defined broadly (Schedule 1) to include operational service, peacekeeping service, hazardous service, and British nuclear test defence service under the VEA, plus warlike and non-warlike service under the MRCA. This captures almost all forms of defence service that give rise to compensation entitlements, but does not include peacetime service under the VEA (which is covered by different standards).

Reasonable hypothesis is the evidentiary standard applicable to claims for operational service and certain other qualifying service. The SOP does not define "reasonable hypothesis" itself; that is established by the VEA and case law. The SOP sets the minimum medical factors that, if present and related to service, are considered by the RMA to be sufficient to raise a reasonable hypothesis. However, a hypothesis must still be reasonable in the legal sense; the SOP does not relieve the decision-maker of assessing whether the hypothesis is consistent with the known facts of the claim.

Factors (section 9) are the specific circumstances that can link tension-type headache to service. They are expressed as "must exist" before a reasonable hypothesis is raised. The factors are disjunctive (at least one need exist). They include both causal (clinical onset) and aggravational (clinical worsening) categories. The factors for worsening expressly require that the person's headache was suffered or contracted before or during (but did not arise out of) relevant service (section 10(2)), which prevents a claim based on worsening if the headache was first caused by service itself.

Category 2 stressor is a defined term covering seven broad types of chronic negative life events: social isolation, relationship problems, work/school concerns, legal issues, severe financial hardship, deterioration in health of a family member, or being a full-time caregiver. This definition is broad. It does not require a single catastrophic event (such as combat trauma) but rather ongoing distress from common life difficulties. This expands the potential pool of service-connected stressors beyond traditional combat-related stressors, particularly because it includes ongoing relationship problems and financial hardship that could arise from service-related factors such as postings, injuries, or unemployment following discharge.

Clinically significant disorder of mental health as specified lists eight anxiety-based conditions (agoraphobia, anxiety disorder, OCD, panic disorder, PTSD, separation anxiety, social anxiety, specific phobia). The disorder must be "of sufficient severity to warrant ongoing management". Notably, Note 2 in the dictionary clarifies that it does not require actual management received. This means a person may have had such a condition without ever seeking treatment. The condition must exist within one year before clinical onset or worsening of tension-type headache. This factor creates an indirect pathway: if a veteran has a diagnosed or diagnosable anxiety disorder due to service, and within a year develops tension-type headache, that can link the headache to service even if the headache itself is not directly caused by service trauma.

Taking a drug as specified covers simple analgesic use on at least three days per week, or triptans, ergotamine, opioids, or combination analgesics on at least two days per week. This threshold is relatively low. For simple analgesics (e.g. paracetamol, ibuprofen), three days per week is common. Factor 1 applies only to chronic tension-type headache in migraine and cluster headache sufferers only, meaning the drug overuse factor for onset is restricted to those with pre-existing migraine or cluster headache. Factor 6 (drug overuse for worsening) applies to all tension-type headache.

Inability to obtain appropriate clinical management (factor 12) is a catch-all residual factor. It does not specify a timeframe or type of clinical management. This can capture situations where a veteran could not access treatment due to service-related circumstances (e.g. remote postings, lack of medical resources, service requirements preventing attendance). It is a broad, potentially expansive factor that may be relied upon when no other factor exists.

This SOP directly affects veterans and members of the Australian Defence Force who have rendered relevant service and who claim compensation for tension-type headache. It also affects their dependants who may claim in the event of death from tension-type headache. Practically, the SOP shapes the behaviour of all players in the veterans' compensation system.

Claimants must prove that at least one factor from section 9 existed and is related to their service. The SOP sets the evidentiary bar. A claimant with tension-type headache but no mental health condition, no stressor, no drug overuse, no insomnia, no recent head injury, and no inability to obtain clinical management cannot succeed. Those who can document a qualifying factor have a reasonable hypothesis path. The breadth of certain definitions (category 2 stressor covers many life events) may allow claimants to link ordinary marital stress or workplace bullying during service to their headache. Conversely, the requirement that a clinically significant disorder of mental health must be "as specified" (only eight anxiety disorders) excludes depression, adjustment disorder, and other common mental health conditions.

Veterans' advocates and legal representatives must familiarise themselves with the detailed definitions and apply them to the facts. A misapplication can lead to rejected claims or appeals. The factors are a checklist; representatives will gather evidence of drug use patterns, mental health diagnoses, stressors, and sleep complaints. The SOP increases the sophistication of claims, requiring medical evidence that specifically addresses the definitions.

Medical practitioners (general practitioners, neurologists, psychiatrists) who provide reports for claims must understand the criteria. A GP's diagnosis of "tension headache" without the required frequency, duration, characteristics, and exclusion criteria may be insufficient. The headache must meet the SOP definition, which is more stringent than the ordinary clinical diagnosis. Similarly, a mental health condition must be of sufficient severity to warrant ongoing management, even if not managed. Practitioners may need to attest to the severity and the timeframe relative to the headache's onset or worsening.

Department of Veterans' Affairs (DVA) decision-makers will apply the SOP as a binding instrument. They must determine if the medical evidence satisfies each element of the definition and the factor. Experience with other SOPs suggests that disputes often centre on whether the claimed headache meets the definition, whether the mental health condition is "as specified", and whether a stressor is "chronic in nature". The broad definition of category 2 stressor may generate more claims, increasing administrative processing costs (borne by taxpayers).

The Repatriation Medical Authority itself is affected indirectly: the SOP must be supported by sound medical-scientific evidence, and the RMA faces potential judicial review if its determinations are challenged as not following the VEA. However, the RMA has wide discretion on what evidence it considers sound.

Taxpayers bear the ultimate cost. More expansive definitions and more factors mean more claims accepted, leading to higher compensation payments and medical costs. Conversely, strict definitions and exclusions may save costs by denying marginal claims. The SOP does not create any direct costs for private enterprise, but the overall cost of the veterans' compensation system is a fiscal consideration.

Private insurers who provide income protection or health insurance to veterans may be indirectly affected by DVA acceptance of claims, as accepted conditions can affect eligibility for other benefits.

This SOP does not impose duties on private parties; it creates conditions under which the Commonwealth has a duty to pay compensation. Claimants have a right to have their claim assessed under this SOP if they are eligible under the VEA or MRCA. Key duties flow from the structure.

Duty of the Repatriation Medical Authority: the RMA must determine SOPs based on sound medical-scientific evidence (the instrument says it is of that view). It must revoke earlier SOPs when replacing them. The RMA must ensure the dictionary definitions are consistent with the VEA and MRCA provisions.

Duty of DVA decision-makers: they must apply the SOP when assessing claims. They cannot disregard the SOP or substitute their own medical criteria. They must consider whether the headache meets the definition in section 7(2) as a threshold issue. If it does not, the claim fails regardless of the factors. If it does, they must check whether at least one factor exists and is related to service. They must treat the factor as sufficient to raise a reasonable hypothesis but still consider other evidence that may disprove the hypothesis. The SOP is not a guarantee of success; it only sets the minimum.

Duty of claimants: to raise a reasonable hypothesis, the claimant must present enough evidence to point to one of the factors. The standard of proof in the VEA is reasonable satisfaction for some claims, but for operational service the standard is reasonable hypothesis (which is lower). The SOP does not shift the burden of proof; it clarifies what evidence is sufficient to constitute a reasonable hypothesis. Claimants have a right to rely on the SOP to argue their case.

Duties of medical professionals (not directly imposed by this SOP, but in practice for claim purposes): to provide evidence in terms that match the definitions. There is no legal duty, but the effectiveness of evidence will depend on compliance with the SOP's language. A doctor who diagnoses "tension-type headache" without specifying the required features may harm the claim.

Rights of third parties: dependants may claim in relation to death from tension-type headache. The definition of death includes contribution from a terminal event that was contributed to by tension-type headache. This means tension-type headache does not need to be the direct cause of death; it need only contribute to a terminal event such as pneumonia or respiratory failure. This is a broad interpretation that could increase death claims.

Interaction with section 120A VEA: that section provides that the SOP binds the decision-maker. If a factor does not exist, the hypothesis cannot be reasonable. This creates a de facto requirement that the claim must fit within the SOP's factors. The right to have a claim considered outside the SOP is limited to cases where the condition is not covered by any SOP (not applicable here) or where the SOP is not exhaustive.

Interaction with section 338 MRCA: similar binding effect under MRCA. Claimants under MRCA for tension-type headache must also satisfy this SOP.

This is not a prohibitory instrument and creates no penalties in the traditional sense. It has no enforcement provisions. However, the consequences of failing to meet its criteria are that a claim for compensation will be rejected. That is a de facto penalty for claimants who cannot provide evidence matching the definition or factors.

There is no fine or criminal sanction for non-compliance. The instrument operates within the administrative law framework of the VEA and MRCA. If a claimant knowingly provides false information to meet a factor, they may face penalties under the general provisions of the VEA for fraud or making false statements (not specified in this SOP but exist elsewhere). Similarly, medical practitioners who knowingly provide false reports could face professional misconduct proceedings.

The SOP itself does not impose any obligations on the DVA or the RMA. If the RMA fails to base an SOP on sound medical-scientific evidence, the SOP could be challenged in the Federal Court by way of judicial review. The VEA provides for review of RMA determinations by the Administrative Appeals Tribunal (AAT) in certain circumstances. However, that is a remedy for improper decision-making, not a penalty.

The "enforcement" of the SOP is essentially automatic: DVA decision-makers apply it to claims. If they incorrectly apply the definition or miss a factor, the claimant can seek internal review or appeal to the AAT. The AAT can set aside the decision and substitute a new one, applying the SOP correctly. There is no penalty on decision-makers for mistakes aside from the usual administrative consequences.

The only indirect punitive effect is on veterans who cannot meet the criteria: they may be denied compensation for a condition they believe is service-related. The SOP therefore acts as a gatekeeper, reducing the potential for successful claims that are not supported by medical evidence that satisfies the definitions. This may be seen as a cost-control mechanism by limiting claims to those that fit the evidence base.

Penalties for veterans who misrepresent their condition arise from other provisions of the VEA, not this SOP. For example, a person who obtains benefits by fraud can be prosecuted under the Criminal Code (Cth). The SOP does not create any new offences.

This SOP is made under subsection 196B(2) of the VEA. It is a legislative instrument that sits within the veterans' compensation framework. It interacts with several other laws.

Veterans' Entitlements Act 1986: The SOP is expressly authorised by that Act. Section 120A of the VEA provides that for claims relating to operational service, the Commission must be satisfied that there is a reasonable hypothesis connecting the injury or disease with service, and that hypothesis must be consistent with a SOP determined by the RMA. If no factor in the SOP exists, the hypothesis cannot be reasonable. This gives the SOP binding force. Section 338 of the MRCA has equivalent effect. The SOP also interacts with the VEA's provisions on standard of proof (reasonable hypothesis for operational service, reasonable satisfaction for other service) and on the RMA's power to revoke and replace SOPs.

Military Rehabilitation and Compensation Act 2004: The SOP applies to claims under that Act as expressly stated in section 5 of the instrument. Members covered by MRCA for warlike or non-warlike service must satisfy the same factors. The MRCA has its own standard of proof provisions that reference SOPs.

Other Statements of Principles: The SOP references other SOPs. Section 11 provides that if a factor in section 9 refers to an injury or disease covered by another SOP (e.g., clinically significant disorder of mental health), then the factors in that other SOP apply. This means a claimant relying on factor 2 (mental health disorder) must also satisfy the SOP for that specific mental health condition if one exists. For example, if a veteran claims tension-type headache due to PTSD, the PTSD must itself be related to service under its own SOP. This creates a chain of causation: the tension-type headache must be linked to a service-related mental health condition. This can make claims more complex.

Legislative Instruments Act 2003 (now Legislation Act 2003): The SOP is a legislative instrument and subject to registration, tabling, and disallowance by Parliament, though the RMA's determinations are exempt from disallowance under the VEA.

Common law and AAT jurisprudence: While not a statute, case law interpreting "reasonable hypothesis" and the interaction with SOPs is relevant. This SOP does not overrule that case law; it operates within it. No cases are cited in the instrument.

International Statistical Classification of Diseases (ICD-10-AM): The definition of tension-type headache references ICD-10-AM code G44.2, but the proper definition is in section 7(2). The code is used for administrative convenience. The Tenth Edition (2017) is specified.

Interaction with medical registration laws: Medical practitioners providing reports must comply with professional standards, but the SOP does not directly interact with those laws.

This SOP revokes the Statement of Principles concerning tension-type headache No. 1 of 2010, which was also made under subsection 196B(2) of the VEA. The previous SOP had a different wording of factors. This 2018 version updates the definition of tension-type headache (adding the requirement of clinically significant distress or functional impairment), revises the factors, and uses modified dictionary definitions.

The 2010 version had a factor for "using a drug as specified" that was different in detail. The 2018 version introduces the limitation of factor 1 to chronic tension-type headache in migraine and cluster headache sufferers only. It also adds factor 12 (inability to obtain appropriate clinical management) which was not present in the 2010 version. The definition of "category 2 stressor" appears to have been broadened from earlier versions. The 2010 version did not include "having a family member or significant other experience a major deterioration in their health" or "being a full-time caregiver" explicitly.

The instrument commenced on 28 May 2018. It applies to claims made on or after that date, as well as to claims that were not finally determined before commencement (by virtue of section 5 and the application provisions of the VEA). The previous SOP No. 1 of 2010 remains relevant for claims determined before 28 May 2018 or for appeals if the law requires applying the SOP in force at the time of the original decision.

There are no further amendments to this 2018 version recorded in the source text. The user may need to check the Federal Register of Legislation for any subsequent amendments. No amending instruments are noted.

The power to revoke and remake is important. The RMA reviews SOPs periodically based on new medical evidence. The revocation of the 2010 SOP means that the old factors no longer apply. Claimants who would have succeeded under the 2010 version but not under the 2018 version face a change in their entitlements. Transitional provisions in the VEA may preserve rights for claims made before commencement. Legal representatives need to be aware of the date of claim.

The source text does not name any litigation. The Repatriation Medical Authority's SOPs have been the subject of judicial review in the Federal Court of Australia and the High Court, but no such cases are cited in this instrument. The leading case on SOPs is Repatriation Commission v Bey (1997) 79 FCR 364, which established that an SOP is a legislative instrument that binds the decision-maker and must be applied. More recently, Repatriation Commission v Tuite (2008) 170 FCR 567 addressed the meaning of "sound medical-scientific evidence". However, no particular case is referenced here.

Given that this instrument is a replacement, litigation under the 2010 SOP may have occurred but is not mentioned. The 2018 SOP may face challenges if a claimant argues that the definition of tension-type headache is arbitrary or that the factors are unsupported by evidence. So far, there is no indication in the source of any such challenge.

Typical litigation around SOPs includes disputes over whether the RMA acted within power, whether the factors are based on sound medical-scientific evidence, and whether the definition of a disease is too narrow. The AAT has extensive case law on tension-type headache and other SOPs, but citing that would be speculative without the source.

The relationship of this SOP to the Veterans' Review Board and AAT is relevant. Claimants who disagree with a DVA decision can seek review. The review body will apply the SOP as in force at the time of the decision, subject to any transitional provisions. The AAT may consider medical evidence that disputes the RMA's view, but cannot disregard the SOP.

Given the lack of cited cases, the litigation history is best described as consistent with the general jurisprudence on SOPs. No unique or notable cases specific to this 2018 instrument are known from the text.

Several traps await those applying this SOP.

The definition of tension-type headache is stricter than clinical diagnosis. Many doctors diagnose "tension headache" loosely. The SOP requires a minimum of ten episodes in 12 months, each at least 30 minutes, occurring at least one day per month for three consecutive months. It also requires clinically significant distress or impairment of functioning. A claimant with mild, infrequent headaches that do not cause functional impairment will not meet the definition, even if a doctor labels it tension-type. The headache must also have at least two of the four specified characteristics. Claimants need to document the specific features.

The exclusion clause in section 7(2)(d) is broad. It excludes headache attributable to structural abnormalities, inflammatory disorders of the head and neck, systemic disease, and headache from normal physiological stress or temporary extraneous agents. If a claimant's headaches are partly caused by a neck condition (e.g., cervical spondylosis), they may be excluded unless that underlying condition is also service-related and the headache is truly tension-type. The SOP does not prevent a claim if the tension-type headache is separate from other headaches, but if the headache is "attributable to" such causes, it is excluded. This can be difficult to disentangle.

Factor 1 only applies to chronic tension-type headache in migraine and cluster headache sufferers only. This is a narrow, specific factor. It does not apply to episodic tension-type headache or to migraine or cluster headache sufferers with non-chronic tension-type headache. The dictionary defines chronic tension-type headache as occurring on at least 15 days per month on average for more than three months. Claimants with chronic headaches must also have a pre-existing migraine or cluster headache diagnosis. This factor is unlikely to be relied upon often.

The "clinically significant disorder of mental health as specified" list does not include depression or adjustment disorder. Depression is the most common mental health condition among veterans. If a veteran has depression and tension-type headache, factor 2 will not apply unless the depression is accompanied by an anxiety disorder from the list. This is a notable gap. Claimants may try to argue that depression is equivalent to anxiety disorder, but the definition is exhaustive. The RMA has chosen to list only anxiety-based disorders. This may be based on epidemiological evidence linking anxiety more strongly to tension-type headache, but it creates a barrier for depressed veterans.

Insomnia as specified requires at least three nights per week for at least three months and clinically significant distress or functional impairment. Many veterans report difficulty sleeping, but to meet the definition they must have sleep disturbance of that frequency and severity, and it must be present "at the time of the clinical onset" (or worsening). The timing requirement is strict: for onset factors, the insomnia must exist at the time of onset. This may be difficult to prove years later.

Category 2 stressor is broad, but the event must be "chronic in nature and cause the person to feel ongoing distress, concern or worry". A single event is not enough; it must be an ongoing situation. For example, "experiencing a problem with a long-term relationship" is not a single argument; it requires an ongoing problem. The stressor must also be related to relevant service. Claimants might try to link ordinary marital difficulties to service (time away, postings) but must prove the relationship.

Factor 10: "undergoing treatment with a nitric oxide donor at the time of the clinical worsening of tension-type headache". Nitric oxide donors include glyceryl trinitrate (used for angina) and amyl nitrate. Veterans who are prescribed nitrates for heart conditions may have their tension-type headache aggravated. The wording "undergoing treatment" suggests ongoing treatment, not just a single dose. This is a medical factor that may be overlooked.

Inability to obtain appropriate clinical management (factor 12) is a catch-all, but what constitutes "appropriate clinical management"? The SOP does not define it. If a veteran could not access a headache specialist due to location, cost, or service commitments, that may suffice. However, the veteran must show that the inability to obtain management contributed to the tension-type headache. This is vague and may lead to disputes.

Death claims require that tension-type headache contributed to a terminal event. Tension-type headache alone is rarely fatal. Claimants must show that it contributed to pneumonia, respiratory failure, etc. This is a high bar and may rarely be met.

Section 10(2) limits worsening factors. If the tension-type headache first arose during service (was contracted during service) but did not arise out of service, it may still be possible to claim worsening from service if the worsening factor is related to service. But if the headache arose out of service, then the condition is already accepted and worsening is not separately compensable. This distinction matters.

The SOP is made under subsection 196B(2), which is for "reasonable hypothesis", not "reasonable satisfaction". There is a separate SOP under 196B(3) for the higher standard (for claims not on operational service). This instrument only applies to claims where the reasonable hypothesis standard applies. For other claims, a different SOP may apply (if one exists for that standard). The user must check which standard applies to the claim.

Section 11 chains SOPs together. If a veteran relies on factor 2 (mental health disorder), they must also satisfy that the mental health condition is related to service under its own SOP. This can multiply complexity. For example, a veteran with PTSD from combat who develops tension-type headache must prove the PTSD is service-related under the SOP for PTSD. That may be straightforward, but if the mental health condition is not recognised under an SOP (e.g., if it is subclinical), the claim for tension-type headache may fail.

Compliance with this SOP is not a matter of avoiding penalties but of successfully navigating the claims process. Guidance is provided for claimants, representatives, and decision-makers.

For claimants: First, ensure that the diagnosis of tension-type headache meets the SOP definition. Obtain medical evidence that documents the number of headache episodes, their duration, characteristics, and functional impact. The diagnosis should be made by a neurologist or GP familiar with the criteria. Obtain a report that specifically addresses each element of section 7(2). If the headaches are inconsistent with the definition, a claim will not succeed.

Second, identify which factor(s) from section 9 may apply. Gather evidence for the relevant factor. For mental health factors, obtain a psychiatrist or psychologist report confirming one of the listed disorders and its severity (warranting ongoing management even if not received). For stressor factors, document the chronic nature of the stressor and its connection to service. For drug overuse, provide a medication diary or pharmacy records. For insomnia, obtain a sleep history. For head injury, provide medical records of concussion or TBI within seven days before onset or worsening. For inability to obtain clinical management, provide evidence of attempts to access care and barriers (e.g., remote posting, lack of available services).

Third, establish the temporal relationship. For clinical onset factors (1-5), the factor must exist before or at the time of the first headache episodes. For worsening factors (6-11), the factor must occur before the worsening. The timeframe for each factor is specified (e.g., within one year for stressor/mental health; within seven days for head injury). Claimants should provide a timeline.

Fourth, ensure the factor is related to relevant service. For example, if relying on a category 2 stressor like financial hardship, show that the hardship resulted from service-related factors (e.g., unemployment after discharge due to a service injury). For mental health disorders, show that the disorder was caused or aggravated by service.

For representatives: Prepare comprehensive statements of facts and medical reports. Use the language of the SOP in submissions. Identify any chain of SOPs (section 11). If the claimant has another condition covered by a different SOP, ensure that condition is also linked to service. Check that the claim is made under the correct standard (reasonable hypothesis). If the claim is for non-operational service, this SOP may not apply; check for a parallel SOP under subsection 196B(3).

For DVA decision-makers: Apply the SOP strictly. Do not accept a diagnosis of "tension headache" that does not satisfy section 7(2). Consider whether the headache is secondary to another condition (exclusion). Check the timing of the factor relative to the headache's onset or worsening. Determine whether the factor is related to relevant service on the whole of the evidence. Remember that the SOP is sufficient but not necessary to raise a reasonable hypothesis; if factors outside the SOP exist, the hypothesis may still be reasonable, but only if they are consistent with sound medical-scientific evidence (a rare argument).

For medical practitioners providing reports: Use the precise terminology. Do not just state "tension headache"; specify bilateral location, pressing/tightening quality, mild or moderate intensity, and that it is not aggravated by routine physical activity. State the duration and frequency. Address the exclusion of other headaches. If documenting a mental health condition, state that it is one of the eight specified disorders and that it warrants ongoing management. Provide the timeframe. If commenting on drug overuse, specify the drug, frequency, and duration.

General compliance burden: The SOP does not impose any regulatory compliance costs on businesses. Its burden falls on individuals seeking compensation and on the administrative apparatus of DVA. The cost of gathering medical evidence can be significant for claimants, particularly if they need specialist reports. The DVA may provide funding for medical examinations, but delays and out-of-pocket costs (e.g., for private specialists when public options are unavailable) may deter some claimants.

Overall, careful attention to the definitions and temporal elements is essential. The SOP is a technical instrument; mistakes in applying it lead to incorrect outcomes.