Spasmodic Torticollis: Symptoms, Acupuncture & Treatment Options

It is characterized by involuntary contractions of the cervical muscles, sternocleidomastoid, trapezius, and others, presenting as clonic, tonic, or clonic-tonic spasms, leading to spasmodic torticollis.

The pathogenesis of this disease remains unclear. Some believe that psychological factors play a predominant role, while others consider it to be caused by organic brain diseases, such as lesions in the striatum, thalamus, and striatal system. This condition may occur independently or coexist with other movement disorders, including torsion spasm (also known as dystonia musculorum deformans), choreoathetosis, hereditary chorea, and Parkinson’s disease. It may also present as part of the clinical manifestations of torsion spasm, Wilson’s disease, and Hallervorden-Spatz syndrome. As these diseases belong to the extrapyramidal system category or are closely related to basal ganglia pathology, this condition is also referred to as extrapyramidal torticollis.

Neck disorder. Some cases occur following encephalitis, multiple sclerosis, neurosyphilis, or carbon monoxide poisoning. It has also been reported after malaria, the common cold, rheumatic fever, viral infections, and the use of medications (metoclopramide, phenothiazines). In most patients, the onset is insidious and no clear cause can be identified; a minority have a family history, a history of head or neck trauma, or a history of psychological trauma.

Key Diagnostic Points

Clinically, this condition is most commonly observed in adults, with equal prevalence between males and females. The peak age of onset is around 40 years, and at least two-thirds of patients are between 30 and 50 years of age, though it can also occur in children and the elderly. Onset is usually gradual, with progressive worsening, but acute onset is also possible. Involuntary contractions of the neck muscles and abnormal head posture may be mild and easily overlooked in the early stages. In some patients, the condition is first noticed by friends or relatives. Most patients initially experience a pulling force drawing the head to one side, or unconsciously find their head tilting to one side. Many patients can temporarily stop this abnormal movement by pressing a finger against the chin on the affected side. Some cases remain stable, while others progressively worsen, eventually rendering the “manual relief” ineffective, requiring greater force to return the rotated head to its neutral position. Physical exertion, walking, emotional stress, and various stimuli can induce or exacerbate the episode. Symptoms are alleviated when the head is supported (e.g., resting against a chair back or lying flat) and disappear completely during sleep. If the neck muscle contractions are clonic, the head movements appear jerky; if tonic, the head is held rigidly in one direction. The head posture varies depending on which muscles are involved in the spasm. Isolated contraction of the sternocleidomastoid muscle causes head rotation to the opposite side, with lateral neck flexion toward the contracting muscle’s side. Contraction of one sternocleidomastoid together with the contralateral trapezius and splenius cervicis muscles results in head rotation to the opposite side with fixation in that direction, without neck flexion toward the contracting side. Bilateral sternocleidomastoid contraction causes forward head flexion (antecollis). Bilateral contraction of the splenius capitis, splenius cervicis, and trapezius muscles causes head hyperextension (retrocollis). The intensity, frequency, and duration of abnormal neck movements can vary; head movement speed ranges from rapid, violent jerks to slow, graceful bending. Symptoms are typically mildest in the morning after sleep. Abnormal head-neck posture is often variable in many patients, but fixed flexion deformity occurs in severe advanced cases. Prolonged neck muscle spasm may lead to hypertrophy, firmness, and often neck pain. If the pharyngeal constrictor muscles are also involved, dysphagia may occur. Apart from the above features, systemic manifestations…

The mental state and nervous system are normal. In 5%–10% of patients with this disease, the dystonia may extend to the face, shoulders, upper limbs, and upper back, becoming torsion dystonia (torsion spasm).

The clinical severity of torticollis can be classified into three types: mild, moderate, and severe. In the mild type, the range of muscle spasm is limited, presenting as unilateral episodes without myalgia. In the moderate type, bilateral episodes occur, accompanied by mild myalgia. In the severe type, not only are both sides of the muscles affected, but there is also a tendency for the spasm to spread to adjacent muscle groups (muscles of the chest, back, shoulders, and face), accompanied by severe myalgia.

Examination: Electroencephalogram (EEG), CT scan, etc., all aid in differential diagnosis. The diagnosis of this disease is relatively easy, but determining its cause is more difficult.

Treatment

1. Acupoints and Needling Techniques

1. GB20 (Fengchi, bilateral): Located in the depression between the sternocleidomastoid and trapezius muscles, level with GV16 (Fengfu). Two filiform needles of gauge 30, 2 cun in length are used. After routine local disinfection, insert obliquely toward the spine to a depth of approximately 1.6 cun. Needling sensation: local distension and pain, or radiating upward.

2. Fengfu (GV16): Located 1 cun directly above the midpoint of the posterior hairline, in the depression between the trapezius muscles. Use a 30-gauge, 1.5 cun filiform needle. Perform routine disinfection of the local area. Insert perpendicularly toward the foramen magnum to a depth of approximately 1.3 cun. Needling sensation: local distension and pain.

3. **GV14 (Dazhui)**: Located in the depression below the spinous process of the 7th cervical vertebra. A 30-gauge, 1.5 cun filiform needle is used. After routine local disinfection, the needle is inserted perpendicularly to a depth of about 1.4 cun. Needling sensation: local distension and pain.

4. PC6 (Neiguan) (Bilateral): Located 2 cun proximal to the palmar wrist crease, between the tendons of palmaris longus and flexor carpi radialis. Use a filiform needle of gauge 30, 1.5 cun in length. After routine disinfection of the local area, insert perpendicularly to a depth of approximately 1.4 cun. Needling sensation: local distension and pain, or radiation toward the dorsum of the hand and the middle finger.

2. Methods

The patient sits in an upright position. After inserting the needles into the acupoints according to the specified technique, retain them for 40 minutes. At the 20-minute mark, twirl the needles once. Upon needle removal, apply cupping at GV14 (Dazhui) for approximately 1 minute. Treatment is performed once daily, with 10 sessions constituting one treatment course. Rest for 5 days before commencing the next course.

【Comment】

Spasmodic torticollis (痉挛性斜颈) is often overlooked in its early stage when symptoms are not obvious. Once discovered or diagnosed, the disease course is typically long, and the time needed for treatment to take effect is also prolonged, usually requiring more than 10 sessions.

After one or more sessions, results are observed. The time required for a full recovery varies depending on the severity of the condition and the patient’s sensitivity to acupuncture. Generally, patients with more severe conditions—such as those involving muscle symptoms in the back, chest, shoulders, or face—require longer treatment periods. Patients with milder symptoms confined solely to the neck muscles tend to need shorter treatment times and achieve better outcomes. During treatment or after recovery, patients should be advised to engage in physical and recreational activities that promote physical and mental well-being, in order to consolidate the therapeutic effect.

Clinical Manifestations and Diagnostic Features

Spasmodic torticollis, the most common form of adult-onset focal dystonia, is characterized by involuntary, sustained contractions of the cervical musculature, including the sternocleidomastoid, trapezius, and splenius capitis. These contractions produce abnormal head postures and repetitive movements, presenting as clonic, tonic, or mixed clonic-tonic spasms. The hallmark spasmodic torticollis symptoms typically include head turning (torticollis), tilting (laterocollis), forward flexion (anterocollis), or backward extension (retrocollis), often accompanied by neck pain and shoulder elevation. Symptoms may be task-specific or exacerbated by stress and fatigue, while some patients experience a “sensory trick” (geste antagoniste), such as lightly touching the chin or cheek, which temporarily alleviates the dystonic posture. Diagnosis relies on clinical evaluation, as no definitive biomarkers exist; electromyography can confirm the pattern of muscle involvement. The condition frequently develops insidiously between the ages of 30 and 50, with a slight female predominance. Notably, these symptoms can be mistaken for other cervical disorders, underscoring the importance of differentiating spasmodic torticollis vs cervical dystonia—terms often used interchangeably, though “cervical dystonia” is the broader diagnostic category encompassing all focal dystonias affecting the neck.

Pathophysiology and Etiological Considerations

The precise pathogenesis of cervical dystonia remains incompletely understood, but current evidence implicates dysfunction within the basal ganglia, particularly the striatum, thalamus, and related cortico-striato-thalamo-cortical circuits. This dysregulation leads to impaired sensorimotor integration and loss of inhibitory control over motor programs, resulting in involuntary muscle contractions. Historically, spasmodic torticollis vs cervical dystonia debates centered on etiology: some early theories proposed a psychogenic origin due to the condition’s association with stress and its variable presentation. However, modern neuroimaging and electrophysiological studies strongly support an organic basis, with subtle structural and functional abnormalities observed in the putamen, globus pallidus, and cerebellum. The disease may occur as an isolated focal dystonia or coexist with other movement disorders, such as essential tremor or blepharospasm. Genetic factors also play a role; mutations in THAP1, TOR1A, and other dystonia-associated genes have been identified in familial cases, though most instances are sporadic. Environmental triggers, including peripheral trauma or repetitive strain, may precipitate symptoms in genetically predisposed individuals. This complex interplay of neurobiological and genetic elements reframes the condition as a neurodevelopmental network disorder rather than a purely psychosomatic illness.

Pharmacological and Interventional Management

Cervical dystonia treatment options have evolved significantly, with chemodenervation using botulinum neurotoxin type A (BoNT-A) established as the first-line therapy. Botox for spasmodic torticollis is administered via intramuscular injections targeted to the overactive cervical muscles, guided by clinical examination or electromyography. This approach reduces the severity of abnormal postures and pain for 3–4 months per session, with repeated treatments generally maintaining efficacy without systemic side effects. When pharmacological measures are insufficient, oral medications such as anticholinergics (e.g., trihexyphenidyl), benzodiazepines, or baclofen may be used adjunctively, though their efficacy is limited by sedation and other adverse effects. For refractory cases, deep brain stimulation (DBS) targeting the globus pallidus internus (GPi) has shown promise in reducing dystonia severity and improving quality of life. Additionally, selective peripheral denervation is a surgical option for patients who cannot tolerate or do not respond to BoNT-A. Physical therapy and sensory tricks are often recommended as complementary strategies. The choice among these cervical dystonia treatment options depends on symptom pattern, muscle involvement, patient preference, and response to prior interventions.

Differentiation and Prognostic Outlook

Accurate classification is essential for optimal management, as spasmodic torticollis vs cervical dystonia terminology can cause confusion. In clinical practice, “cervical dystonia” is the preferred term for any focal dystonia involving neck muscles, while “spasmodic torticollis” historically describes the most common subtype—rotational head deviation. However, many patients exhibit mixed patterns (e.g., laterocollis with torticollis), and the terms are often used synonymously in the literature. The natural history of the condition varies: approximately 30–40% of patients experience spontaneous remission within the first 5 years, though relapses are common. Without treatment, symptoms may progress to fixed postures and significant disability due to pain, cervical radiculopathy, or spondylosis. Early intervention with botox for spasmodic torticollis can improve motor control and prevent secondary complications. Long-term studies indicate that most patients maintain a stable disease course with intermittent treatment, although a minority develop spread of dystonia to other body regions. Psychosocial factors, such as depression or anxiety, should be addressed concurrently, as they can exacerbate perceived severity. Overall, a multidisciplinary approach combining pharmacotherapy, rehabilitation, and psychological support yields the best outcomes for individuals with this chronic neurological disorder.