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Headache attributed to craniocervical dystonia: a prospective cohort study
- Marcos Eugênio Ramalho Bezerra - Pedro Augusto Sampaio Rocha-Filho • 2026
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Headache attributed to craniocervical dystonia: a prospective cohort study

- Marcos Eugênio Ramalho Bezerra - Pedro Augusto Sampaio Rocha-Filho • • 2026

Headaches & Migraines

Content

### Study Overview and Objectives

This prospective cohort study aimed to investigate the prevalence, characteristics, and impact of headaches attributed to craniocervical dystonia (HACCD) in patients with cervical dystonia (CD) undergoing botulinum toxin type-A (BoNT-A) treatment. It also sought to determine if improvement in dystonia after BoNT-A injections correlated with a reduced impact of HACCD. The study highlighted that headaches in CD patients might be more frequent and impactful than previously acknowledged.

### Key Methodologies Used

Twenty-four adult patients with idiopathic or non-degenerative secondary CD were recruited from a single neurology center in Brazil. Patients were assessed at baseline (before BoNT-A injection), and then at approximately 4 and 16 weeks post-injection. Headaches were classified using the International Classification of Headache Disorders (ICHD-3) criteria. Clinical characteristics of dystonia and headaches were evaluated using validated tools including the Toronto Western Spasmodic Torticollis Rating Scale (TWSTRS), McGill Pain Questionnaire (MPQ), Short Form-36 Health Survey (SF-36), Headache Impact Test-6 (HIT-6), and Hospital Anxiety and Depression Scale (HADS). Muscle palpation for myofascial trigger points and pain intensity was also performed.

### Main Findings and Results

  • A high prevalence of pain (79.1%) and headaches (75.0%) was found in CD patients.
  • The prevalence of HACCD, classified by ICHD-3 criteria, was 29.2%, significantly higher than previously reported.
  • Patients with HACCD presented significantly poorer TWSTRS disability and pain scores and more myofascial trigger points compared to those without headaches.
  • HACCD patients showed significant improvement in HIT-6 scores (headache impact) between the first and second visits (post-BoNT-A), paralleling the improvement in dystonia symptoms. This improvement deteriorated as BoNT-A effects waned.
  • Myofascial pain was highly prevalent (23/24 patients had at least one trigger point), but its temporal evolution did not significantly differ between headache groups.
  • Many HACCD patients reported migraine-like headaches, suggesting a potential pathophysiological overlap between migraine and dystonia.

### Treatment Approaches Discussed

The primary treatment discussed was Botulinum Toxin Type-A (BoNT-A) injections for cervical dystonia. The study observed that BoNT-A not only improved dystonia symptoms but also significantly reduced the impact of HACCD. The mechanism could be due to direct effects on muscle hypercontraction and nociceptive substance release, or central effects via axonal retrograde transport.

### Clinical Implications

Headaches, particularly HACCD, are common and significantly impact the quality of life and disability in CD patients. Recognizing HACCD as a distinct clinical entity, potentially sharing pathophysiological mechanisms with primary headaches like migraine, is crucial. The study suggests that effective management of CD, such as with BoNT-A, can lead to substantial improvements in associated headaches. Myofascial pain is highly prevalent and should be assessed, though its direct role in HACCD pathophysiology requires further investigation.

## 4. KEY FINDINGS

  • **High Headache Prevalence:** 75% of cervical dystonia (CD) patients experience headaches, significantly higher than previously thought.
  • **HACCD is Common:** Headaches attributed to craniocervical dystonia (HACCD) are not rare, with a prevalence of 29.2% in this CD cohort.
  • **Increased Disability with HACCD:** Patients with HACCD experience greater disability and pain (measured by TWSTRS) compared to CD patients without headaches.
  • **Myofascial Trigger Points are Ubiquitous:** Nearly all CD patients (23 out of 24) presented with myofascial trigger points, indicating their high prevalence in this population.
  • **BoNT-A Improves HACCD Impact:** Botulinum toxin type-A injections significantly reduce the impact of HACCD, correlating with improvements in dystonia symptoms.
  • **Temporal Relationship is Key:** The onset of HACCD symptoms often follows the onset of dystonia, making this a critical diagnostic criterion.
  • **Migraine-like Features in HACCD:** Many HACCD patients exhibit migraine-like headache patterns, suggesting a potential shared pathophysiological mechanism.

## 5. CLINICAL APPLICATIONS

### Specific Treatment Protocols

  • **Comprehensive Assessment:** Always screen CD patients for headaches, specifically using ICHD-3 criteria for HACCD. Document headache characteristics, frequency, intensity, and impact (e.g., using HIT-6).
  • **Myofascial Release Techniques:** Given the high prevalence of myofascial trigger points, incorporate soft tissue therapies, trigger point therapy, and other manual techniques targeting the affected cervical and craniocervical muscles (e.g., sternocleidomastoid, splenius capitis, levator scapulae, scalenes, trapezius).
  • **Cervical Mobilization/Manipulation:** While the study focuses on BoNT-A, chiropractors should consider appropriate cervical spine mobilization or manipulation to address underlying biomechanical dysfunction that may contribute to both dystonia and headache symptoms, especially in non-BoNT-A treated patients or as an adjunct.
  • **Collaborative Care:** Recognize that BoNT-A is an effective treatment for both CD and associated HACCD. Collaborate with neurologists for patients requiring BoNT-A, and integrate chiropractic care to manage musculoskeletal components, pain, and improve overall function.

### Patient Education Points

  • **Headaches are Common in CD:** Inform patients that headaches are a very common and often debilitating symptom associated with cervical dystonia, not just a separate issue.
  • **HACCD is a Specific Diagnosis:** Explain that "Headache attributed to craniocervical dystonia" is a recognized condition, and its specific diagnosis can lead to more targeted management.
  • **Multimodal Approach:** Emphasize that managing CD and its associated headaches often requires a multimodal approach, potentially combining medical interventions (like BoNT-A) with chiropractic care, physical therapy, and lifestyle modifications.
  • **Importance of Myofascial Pain:** Educate patients about myofascial trigger points and their role in pain generation, and how chiropractic care can address these.

### When to Apply These Findings

  • **Initial Consultation:** During the initial assessment of any patient presenting with cervical dystonia or chronic neck pain with headache.
  • **Ongoing Management:** Continuously assess headache status and impact throughout a patient's care plan, especially when managing chronic cervical conditions.
  • **Interdisciplinary Referrals:** When a patient with CD and headaches is not responding adequately to conservative care, consider referral for neurological evaluation and potential BoNT-A treatment, while continuing co-management.
  • **Post-BoNT-A Care:** For patients receiving BoNT-A, chiropractic care can complement medical treatment by addressing residual musculoskeletal imbalances, maintaining range of motion, and managing myofascial pain that may not be fully resolved by toxin injections alone.

## 6. SOCIAL MEDIA HOOKS

  • **"Do you suffer from chronic neck pain AND headaches? New research shows headaches are far more common in cervical dystonia than we thought, impacting daily life significantly! #CervicalDystonia #HeadacheRelief #ChiropracticCare"**
  • **"Unpacking the link between neck tension and headaches! This study highlights how headaches attributed to craniocervical dystonia are a major concern. Could chiropractic care help manage your symptoms? #NeckPain #Migraine #HealthResearch"**
  • **"Chiropractors, this is a must-read! The prevalence of headaches in cervical dystonia is high, and they significantly impact patient disability. Let's discuss how we can better support these patients. #Chiropractic #Neuroscience #PainManagement"**
  • **"Beyond just neck pain: If you have cervical dystonia, chances are you're also battling headaches. Learn how a comprehensive approach can bring relief and improve your quality of life! #DystoniaAwareness #HeadacheTreatment #Wellness"**

Video Explanation

Key Findings/Takeaways

  • **High Headache Prevalence:** 75% of cervical dystonia (CD) patients experience headaches, significantly higher than previously thought.
  • **HACCD is Common:** Headaches attributed to craniocervical dystonia (HACCD) are not rare, with a prevalence of 29.2% in this CD cohort.
  • **Increased Disability with HACCD:** Patients with HACCD experience greater disability and pain (measured by TWSTRS) compared to CD patients without headaches.
  • **Myofascial Trigger Points are Ubiquitous:** Nearly all CD patients (23 out of 24) presented with myofascial trigger points, indicating their high prevalence in this population.
  • **BoNT-A Improves HACCD Impact:** Botulinum toxin type-A injections significantly reduce the impact of HACCD, correlating with improvements in dystonia symptoms.
  • **Temporal Relationship is Key:** The onset of HACCD symptoms often follows the onset of dystonia, making this a critical diagnostic criterion.
  • **Migraine-like Features in HACCD:** Many HACCD patients exhibit migraine-like headache patterns, suggesting a potential shared pathophysiological mechanism.

Clinical Applications

### Specific Treatment Protocols

  • **Comprehensive Assessment:** Always screen CD patients for headaches, specifically using ICHD-3 criteria for HACCD. Document headache characteristics, frequency, intensity, and impact (e.g., using HIT-6).
  • **Myofascial Release Techniques:** Given the high prevalence of myofascial trigger points, incorporate soft tissue therapies, trigger point therapy, and other manual techniques targeting the affected cervical and craniocervical muscles (e.g., sternocleidomastoid, splenius capitis, levator scapulae, scalenes, trapezius).
  • **Cervical Mobilization/Manipulation:** While the study focuses on BoNT-A, chiropractors should consider appropriate cervical spine mobilization or manipulation to address underlying biomechanical dysfunction that may contribute to both dystonia and headache symptoms, especially in non-BoNT-A treated patients or as an adjunct.
  • **Collaborative Care:** Recognize that BoNT-A is an effective treatment for both CD and associated HACCD. Collaborate with neurologists for patients requiring BoNT-A, and integrate chiropractic care to manage musculoskeletal components, pain, and improve overall function.

### Patient Education Points

  • **Headaches are Common in CD:** Inform patients that headaches are a very common and often debilitating symptom associated with cervical dystonia, not just a separate issue.
  • **HACCD is a Specific Diagnosis:** Explain that "Headache attributed to craniocervical dystonia" is a recognized condition, and its specific diagnosis can lead to more targeted management.
  • **Multimodal Approach:** Emphasize that managing CD and its associated headaches often requires a multimodal approach, potentially combining medical interventions (like BoNT-A) with chiropractic care, physical therapy, and lifestyle modifications.
  • **Importance of Myofascial Pain:** Educate patients about myofascial trigger points and their role in pain generation, and how chiropractic care can address these.

### When to Apply These Findings

  • **Initial Consultation:** During the initial assessment of any patient presenting with cervical dystonia or chronic neck pain with headache.
  • **Ongoing Management:** Continuously assess headache status and impact throughout a patient's care plan, especially when managing chronic cervical conditions.
  • **Interdisciplinary Referrals:** When a patient with CD and headaches is not responding adequately to conservative care, consider referral for neurological evaluation and potential BoNT-A treatment, while continuing co-management.
  • **Post-BoNT-A Care:** For patients receiving BoNT-A, chiropractic care can complement medical treatment by addressing residual musculoskeletal imbalances, maintaining range of motion, and managing myofascial pain that may not be fully resolved by toxin injections alone.

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📚 Educational Email
Subject: That headache? It might be linked to your neck in a surprising way. Did you know that 3 out of 4 people with certain neck conditions also suffer from headaches? That's a much higher number than many doctors previously thought. And it points to a fascinating connection between your neck and those pounding head pains. === A new study looked at people with a condition called cervical dystonia – where neck muscles involuntarily contract, causing the head to twist or jerk. The researchers found that a whopping 75% of these patients also experienced headaches. What's more, nearly 30% had a specific type of headache directly linked to their neck condition, called "Headache attributed to craniocervical dystonia" (HACCD). These weren't just minor pains; they significantly impacted their daily lives. === This research really highlights how deeply intertwined your neck health is with headache frequency and intensity. Even if you don't have cervical dystonia, the study found that almost everyone (23 out of 24 patients!) had "myofascial trigger points" – those tight, painful knots in your muscles. These trigger points can be a huge source of pain, radiating into your head and causing a lot of discomfort. The study even noted that many of these headaches felt a lot like migraines, suggesting a shared pathway. === What does this mean for you? If you're dealing with chronic headaches, especially if they come with neck stiffness, pain, or limited movement, your neck is likely playing a bigger role than you think. It's not just "stress" or "bad luck." Focusing on the health of your neck muscles and spine can be a game-changer for headache relief. Addressing those tight spots and improving your neck's function can directly reduce the impact of your headaches. === So, here's your takeaway: Don't ignore neck pain or stiffness if you also get headaches. They're probably talking to each other. If you've been struggling with headaches and suspect your neck might be involved, let's chat. We can assess your neck, find those hidden trigger points, and see how chiropractic care might help you find relief. Just reply to this email or give us a call to schedule a check-up.
🎯 Promotional Email
Subject: Is your neck pain causing your headaches? You're not alone. Ever feel like your neck is constantly stiff, and then BAM – a headache hits? You might think it's just "part of life," but new research sheds some serious light on this connection. === A recent study looked at people with chronic neck issues (specifically, cervical dystonia) and found something pretty eye-opening: a whopping 75% of them also suffered from headaches. And these weren't just mild headaches; they significantly impacted daily life. === Even more interesting? Nearly all of these patients had "myofascial trigger points" – those super tight, tender spots in your muscles that can refer pain elsewhere. Think of them as knots that scream. === This is exactly why we focus so much on your neck and upper back when you come in with headaches. We're not just guessing; we're using evidence to connect the dots between your muscle tension, spinal alignment, and those nagging head pains. If you're tired of living with neck pain and the headaches that come with it, let's talk. We can assess your specific situation and see if our approach can help untangle those knots and bring you some real relief. Ready to explore a different path to feeling better? Reply to this email or give us a call at [Phone Number] to schedule a consultation. P.S. Don't let chronic headaches become your new normal. There are often clear, treatable reasons for them.