What the First Chiropractic Headache Guideline in Over a Decade Recommends, and What It Does Not

The Guideline

Trager and colleagues conducted a structured guideline development process that goes well beyond the typical narrative review. They first ran an umbrella review, searching for systematic reviews and existing clinical practice guidelines on nonpharmacological interventions for adults with CGH or TTH published from 2017 to August 2023. They identified 32 documents, comprising 31 systematic reviews and 1 prior clinical practice guideline. Risk of bias and certainty of evidence were assessed by at least two authors per document.

The synthesis fed into a steering committee, which drafted statements derived from the body of evidence and existing seed documents. Statements were then reviewed by a 57-member Delphi panel of chiropractors, researchers, and other relevant stakeholders. Anonymous feedback was collected through multiple Delphi rounds until each statement reached at least 80% consensus. Statements that survived Delphi consensus were then put to public comment, prompting further revision, with the revisions reviewed by the panel again.

Two design choices in this process deserve attention. First, the Delphi panel size of 57 is substantially larger than typical chiropractic guideline panels and increases the diversity of clinical perspectives. Second, the inclusion of a Johns Hopkins-based board-certified neurologist (Oakley) and VA Puget Sound rehabilitation medicine physicians as co-authors gives the guideline a credibility within mainstream medicine that earlier chiropractic-only guidelines did not have. This is not a self-referential exercise.

What the Guideline Recommends

The CGH recommendation is the most directly clinically actionable. Cervicogenic headache, by definition, originates from cervical spine structures, typically from upper cervical segmental dysfunction. Targeting the cervical spine with manipulation is mechanistically aligned with the underlying pathophysiology. Trager and colleagues conclude that the evidence supports SMT as a primary chiropractic intervention for this population.

The TTH recommendation is more cautious and, in my view, more interesting. Tension-type headache is the most common headache type globally. Its pathophysiology is less clearly cervicogenic and is plausibly multifactorial: musculoskeletal, postural, psychogenic, sleep-related, and centrally mediated. The guideline panel recognized that recommending SMT alone for TTH would overstate the available evidence. Recommending SMT within multimodal care, where SMT is paired with patient education, exercise, postural correction, and lifestyle modification, captures the more honest reading of the literature. Multimodal does not mean "throw everything at it." It means adjust the spinal segments that need adjusting AND coach the patient on the other contributors.

What the Guideline Does Not Strongly Recommend

This is where Trager and colleagues distinguish themselves from less disciplined chiropractic guideline authors. They explicitly decline to issue strong recommendations for several interventions that practitioners commonly stack into headache care:

Acupuncture and electroacupuncture, used alone for CGH or TTH, do not earn a strong recommendation. The evidence base is mixed and the certainty is not high enough to support categorical use.

Standalone education, meditation, and mindfulness for CGH do not earn a strong recommendation. This does not mean they have no role. It means using them alone, without the rest of multimodal care, is not what the evidence supports.

Modalities used in isolation (electrical stimulation, ultrasound, etc.) for CGH do not earn a strong recommendation. The evidence simply does not establish their standalone effectiveness.

This kind of negative recommendation language is unusual in chiropractic guideline literature. Many older guidelines suffer from the all-of-the-above problem: every intervention the profession offers gets a soft endorsement because nobody on the panel wants to exclude their colleagues' practice. Trager and colleagues did not do this. They recommended what the evidence supported, declined what the evidence did not, and named specific interventions that fall in the latter category. That increases the document's credibility outside the chiropractic profession.

What This Means Clinically

I see headache patients regularly. Cervicogenic headache is one of the most satisfying conditions to treat in chiropractic, because the pathophysiology and the intervention are so well aligned: a restricted upper cervical segment refers pain into the head, you restore segmental motion, the headache resolves. Patients walk out lighter than they came in. This guideline reinforces what most practicing chiropractors with a thoughtful intake already knew. The endorsement now exists in a multi-stakeholder, peer-reviewed document I can hand to a primary care colleague who is uncertain about referring.

Tension-type headache is harder, and I am glad the guideline reflects that. The patient who comes in with a 10-year history of daily tension headaches, sleeping 5 hours a night, sitting at a laptop 9 hours a day, with no neck-specific findings on exam, is not going to be cured by adjustments alone. They might get short-term relief, but the durable change comes from sleep extension, ergonomic correction, and graded movement. Multimodal is the honest framing, and the Trager guideline insists on that framing.

For the patient who walks in believing chiropractic alone will resolve every headache, this guideline is a useful counterweight. For the patient who walks in believing chiropractic has nothing to offer, the CGH recommendation is a clear statement that, for the right diagnostic profile, this is exactly what the literature supports.

The Diagnostic Workflow Matters

Worth highlighting is the guideline's attention to diagnostic protocol, not just treatment. Recommendations include history taking, red flag screening, and physical examination for CGH and TTH. This is not an afterthought. The most common error in real-world chiropractic headache care is mistreating one headache type as another. CGH responds well to cervical SMT. TTH responds modestly to multimodal care that includes SMT. Migraine responds variably and often better to other interventions. A patient with red flags (sudden severe onset, neurologic deficit, age over 50 with new-onset headache, history of cancer, immunocompromise) should be referred urgently, not treated with manipulation. The guideline embeds these decisions into the workflow, which is appropriate.

For complementary clinical context on chiropractic effectiveness data, see our recent Cochrane SMT for chronic low back pain commentary, which examines methodological challenges in the broader manipulative therapy evidence base.